Packages the distutils stdlib module as a standalone package,
```
377K distutils.data
221K distutils.data.br
19K distutils.js
```
to reduce the minimal pyodide size.

Part of #1542 

This also,
 - adds documentation on what's supported or not in the stdlib
 - makes a few changes to `pyodide_build/buildall.py` to be able to add such stdlib packages as a dependency in other packages (which didn't work before). For instance, until there is a release with https://github.com/pypa/packaging/pull/396 micropip has a dependency on distutils.
Unvendor distutils. Packages the distutils stdlib module as a standalone package,
```
377K distutils.data
221K distutils.data.br
19K distutils.js
```
to reduce the minimal pyodide size.

Part of #1542 

This also,
 - adds documentation on what's supported or not in the stdlib
 - makes a few changes to `pyodide_build/buildall.py` to be able to add such stdlib packages as a dependency in other packages (which didn't work before). For instance, until there is a release with https://github.com/pypa/packaging/pull/396 micropip has a dependency on distutils.
#define HAVE_ENDIAN_H 1
#define SIZEOF_PY_INTPTR_T 4
#define SIZEOF_OFF_T 8
#define SIZEOF_PY_LONG_LONG 8
#define MATHLIB m
#define HAVE_SIN 1
#define HAVE_COS 1
#define HAVE_TAN 1
#define HAVE_SINH 1
#define HAVE_COSH 1
#define HAVE_TANH 1
#define HAVE_FABS 1
#define HAVE_FLOOR 1
#define HAVE_CEIL 1
#define HAVE_SQRT 1
#define HAVE_LOG10 1
#define HAVE_LOG 1
#define HAVE_EXP 1
#define HAVE_ASIN 1
#define HAVE_ACOS 1
#define HAVE_ATAN 1
#define HAVE_FMOD 1
#define HAVE_MODF 1
#define HAVE_FREXP 1
#define HAVE_LDEXP 1
#define HAVE_RINT 1
#define HAVE_TRUNC 1
#define HAVE_EXP2 1
#define HAVE_LOG2 1
#define HAVE_ATAN2 1
#define HAVE_POW 1
#define HAVE_NEXTAFTER 1
#define HAVE_STRTOLL 1
#define HAVE_STRTOULL 1
#define HAVE_CBRT 1
#define HAVE_STRTOLD_L 1
#define HAVE_FALLOCATE 1
#undef HAVE_BACKTRACE
#undef HAVE_XMMINTRIN_H
#undef HAVE_EMMINTRIN_H
#define HAVE_FEATURES_H 1
#define HAVE_DLFCN_H 1
#define HAVE___BUILTIN_ISNAN 1
#define HAVE___BUILTIN_ISINF 1
#define HAVE___BUILTIN_ISFINITE 1
#define HAVE___BUILTIN_BSWAP32 1
#define HAVE___BUILTIN_BSWAP64 1
#define HAVE___BUILTIN_EXPECT 1
#define HAVE___BUILTIN_MUL_OVERFLOW 1
#undef HAVE___BUILTIN_CPU_SUPPORTS
#define HAVE__M_FROM_INT64 1
#define HAVE__MM_LOAD_PS 1
#define HAVE__MM_PREFETCH 1
#define HAVE__MM_LOAD_PD 1
#define HAVE___BUILTIN_PREFETCH 1
#define HAVE_LINK_AVX 1
#define HAVE_LINK_AVX2 1
#undef HAVE_ATTRIBUTE_OPTIMIZE_UNROLL_LOOPS
#undef HAVE_ATTRIBUTE_OPTIMIZE_OPT_3
#define HAVE_ATTRIBUTE_NONNULL 1
#define HAVE_ATTRIBUTE_TARGET_AVX 1
#define HAVE_ATTRIBUTE_TARGET_AVX2 1
#define HAVE___THREAD 1
#define HAVE_SINF 1
#define HAVE_COSF 1
#define HAVE_TANF 1
#define HAVE_SINHF 1
#define HAVE_COSHF 1
#define HAVE_TANHF 1
#define HAVE_FABSF 1
#define HAVE_FLOORF 1
#define HAVE_CEILF 1
#define HAVE_RINTF 1
#define HAVE_TRUNCF 1
#define HAVE_SQRTF 1
#define HAVE_LOG10F 1
#define HAVE_LOGF 1
#define HAVE_LOG1PF 1
#define HAVE_EXPF 1
#define HAVE_EXPM1F 1
#define HAVE_ASINF 1
#define HAVE_ACOSF 1
#define HAVE_ATANF 1
#define HAVE_ASINHF 1
#define HAVE_ACOSHF 1
#define HAVE_ATANHF 1
#define HAVE_HYPOTF 1
#define HAVE_ATAN2F 1
#define HAVE_POWF 1
#define HAVE_FMODF 1
#define HAVE_MODFF 1
#define HAVE_FREXPF 1
#define HAVE_LDEXPF 1
#define HAVE_EXP2F 1
#define HAVE_LOG2F 1
#define HAVE_COPYSIGNF 1
#define HAVE_NEXTAFTERF 1
#define HAVE_CBRTF 1
#undef HAVE_SINL
#undef HAVE_COSL
#undef HAVE_TANL
#undef HAVE_SINHL
#undef HAVE_COSHL
#undef HAVE_TANHL
#undef HAVE_FABSL
#undef HAVE_FLOORL
#undef HAVE_CEILL
#undef HAVE_RINTL
#undef HAVE_TRUNCL
#undef HAVE_SQRTL
#undef HAVE_LOG10L
#undef HAVE_LOGL
#undef HAVE_LOG1PL
#undef HAVE_EXPL
#undef HAVE_EXPM1L
#undef HAVE_ASINL
#undef HAVE_ACOSL
#undef HAVE_ATANL
#undef HAVE_ASINHL
#undef HAVE_ACOSHL
#undef HAVE_ATANHL
#undef HAVE_HYPOTL
#undef HAVE_ATAN2L
#undef HAVE_POWL
#undef HAVE_FMODL
#undef HAVE_MODFL
#undef HAVE_FREXPL
#undef HAVE_LDEXPL
#undef HAVE_EXP2L
#undef HAVE_LOG2L
#undef HAVE_COPYSIGNL
#undef HAVE_NEXTAFTERL
#undef HAVE_CBRTL
#define HAVE_DECL_SIGNBIT
#undef HAVE_COMPLEX_H
#define HAVE_CABS 1
#define HAVE_CACOS 1
#define HAVE_CACOSH 1
#define HAVE_CARG 1
#define HAVE_CASIN 1
#define HAVE_CASINH 1
#define HAVE_CATAN 1
#define HAVE_CATANH 1
#define HAVE_CCOS 1
#define HAVE_CCOSH 1
#define HAVE_CEXP 1
#define HAVE_CIMAG 1
#define HAVE_CLOG 1
#define HAVE_CONJ 1
#define HAVE_CPOW 1
#define HAVE_CPROJ 1
#define HAVE_CREAL 1
#define HAVE_CSIN 1
#define HAVE_CSINH 1
#define HAVE_CSQRT 1
#define HAVE_CTAN 1
#define HAVE_CTANH 1
#define HAVE_CABSF 1
#define HAVE_CACOSF 1
#define HAVE_CACOSHF 1
#define HAVE_CARGF 1
#define HAVE_CASINF 1
#define HAVE_CASINHF 1
#define HAVE_CATANF 1
#define HAVE_CATANHF 1
#define HAVE_CCOSF 1
#define HAVE_CCOSHF 1
#define HAVE_CEXPF 1
#define HAVE_CIMAGF 1
#define HAVE_CLOGF 1
#define HAVE_CONJF 1
#define HAVE_CPOWF 1
#define HAVE_CPROJF 1
#define HAVE_CREALF 1
#define HAVE_CSINF 1
#define HAVE_CSINHF 1
#define HAVE_CSQRTF 1
#define HAVE_CTANF 1
#define HAVE_CTANHF 1
#undef HAVE_CABSL
#undef HAVE_CACOSL
#undef HAVE_CACOSHL
#undef HAVE_CARGL
#undef HAVE_CASINL
#undef HAVE_CASINHL
#undef HAVE_CATANL
#undef HAVE_CATANHL
#undef HAVE_CCOSL
#undef HAVE_CCOSHL
#undef HAVE_CEXPL
#undef HAVE_CIMAGL
#undef HAVE_CLOGL
#undef HAVE_CONJL
#undef HAVE_CPOWL
#undef HAVE_CPROJL
#undef HAVE_CREALL
#undef HAVE_CSINL
#undef HAVE_CSINHL
#undef HAVE_CSQRTL
#undef HAVE_CTANL
#undef HAVE_CTANHL
#define NPY_RESTRICT restrict
#define NPY_RELAXED_STRIDES_CHECKING 1
#define HAVE_LDOUBLE_IEEE_DOUBLE_LE 1
#define NPY_PY3K 1
#ifndef __cplusplus
/* #undef inline */
#endif

#ifndef _NPY_NPY_CONFIG_H_
#error config.h should never be included directly, include npy_config.h instead
#endif

#define HAVE_ENDIAN_H 1
#define SIZEOF_PY_INTPTR_T 4
#define SIZEOF_OFF_T 8
#define SIZEOF_PY_LONG_LONG 8
#define MATHLIB m
#define HAVE_SIN 1
#define HAVE_COS 1
#define HAVE_TAN 1
#define HAVE_SINH 1
#define HAVE_COSH 1
#define HAVE_TANH 1
#define HAVE_FABS 1
#define HAVE_FLOOR 1
#define HAVE_CEIL 1
#define HAVE_SQRT 1
#define HAVE_LOG10 1
#define HAVE_LOG 1
#define HAVE_EXP 1
#define HAVE_ASIN 1
#define HAVE_ACOS 1
#define HAVE_ATAN 1
#define HAVE_FMOD 1
#define HAVE_MODF 1
#define HAVE_FREXP 1
#define HAVE_LDEXP 1
#define HAVE_RINT 1
#define HAVE_TRUNC 1
#define HAVE_EXP2 1
#define HAVE_LOG2 1
#define HAVE_ATAN2 1
#define HAVE_POW 1
#define HAVE_NEXTAFTER 1
#define HAVE_STRTOLL 1
#define HAVE_STRTOULL 1
#define HAVE_CBRT 1
#define HAVE_STRTOLD_L 1
#define HAVE_FALLOCATE 1
#undef HAVE_BACKTRACE
#undef HAVE_XMMINTRIN_H
#undef HAVE_EMMINTRIN_H
#define HAVE_FEATURES_H 1
#define HAVE_DLFCN_H 1
#define HAVE___BUILTIN_ISNAN 1
#define HAVE___BUILTIN_ISINF 1
#define HAVE___BUILTIN_ISFINITE 1
#define HAVE___BUILTIN_BSWAP32 1
#define HAVE___BUILTIN_BSWAP64 1
#define HAVE___BUILTIN_EXPECT 1
#define HAVE___BUILTIN_MUL_OVERFLOW 1
#undef HAVE___BUILTIN_CPU_SUPPORTS
#define HAVE__M_FROM_INT64 1
#define HAVE__MM_LOAD_PS 1
#define HAVE__MM_PREFETCH 1
#define HAVE__MM_LOAD_PD 1
#define HAVE___BUILTIN_PREFETCH 1
#define HAVE_LINK_AVX 1
#define HAVE_LINK_AVX2 1
#undef HAVE_ATTRIBUTE_OPTIMIZE_UNROLL_LOOPS
#undef HAVE_ATTRIBUTE_OPTIMIZE_OPT_3
#define HAVE_ATTRIBUTE_NONNULL 1
#define HAVE_ATTRIBUTE_TARGET_AVX 1
#define HAVE_ATTRIBUTE_TARGET_AVX2 1
#define HAVE___THREAD 1
#define HAVE_SINF 1
#define HAVE_COSF 1
#define HAVE_TANF 1
#define HAVE_SINHF 1
#define HAVE_COSHF 1
#define HAVE_TANHF 1
#define HAVE_FABSF 1
#define HAVE_FLOORF 1
#define HAVE_CEILF 1
#define HAVE_RINTF 1
#define HAVE_TRUNCF 1
#define HAVE_SQRTF 1
#define HAVE_LOG10F 1
#define HAVE_LOGF 1
#define HAVE_LOG1PF 1
#define HAVE_EXPF 1
#define HAVE_EXPM1F 1
#define HAVE_ASINF 1
#define HAVE_ACOSF 1
#define HAVE_ATANF 1
#define HAVE_ASINHF 1
#define HAVE_ACOSHF 1
#define HAVE_ATANHF 1
#define HAVE_HYPOTF 1
#define HAVE_ATAN2F 1
#define HAVE_POWF 1
#define HAVE_FMODF 1
#define HAVE_MODFF 1
#define HAVE_FREXPF 1
#define HAVE_LDEXPF 1
#define HAVE_EXP2F 1
#define HAVE_LOG2F 1
#define HAVE_COPYSIGNF 1
#define HAVE_NEXTAFTERF 1
#define HAVE_CBRTF 1
#undef HAVE_SINL
#undef HAVE_COSL
#undef HAVE_TANL
#undef HAVE_SINHL
#undef HAVE_COSHL
#undef HAVE_TANHL
#undef HAVE_FABSL
#undef HAVE_FLOORL
#undef HAVE_CEILL
#undef HAVE_RINTL
#undef HAVE_TRUNCL
#undef HAVE_SQRTL
#undef HAVE_LOG10L
#undef HAVE_LOGL
#undef HAVE_LOG1PL
#undef HAVE_EXPL
#undef HAVE_EXPM1L
#undef HAVE_ASINL
#undef HAVE_ACOSL
#undef HAVE_ATANL
#undef HAVE_ASINHL
#undef HAVE_ACOSHL
#undef HAVE_ATANHL
#undef HAVE_HYPOTL
#undef HAVE_ATAN2L
#undef HAVE_POWL
#undef HAVE_FMODL
#undef HAVE_MODFL
#undef HAVE_FREXPL
#undef HAVE_LDEXPL
#undef HAVE_EXP2L
#undef HAVE_LOG2L
#undef HAVE_COPYSIGNL
#undef HAVE_NEXTAFTERL
#undef HAVE_CBRTL
#define HAVE_DECL_SIGNBIT
#undef HAVE_COMPLEX_H
#define HAVE_CABS 1
#define HAVE_CACOS 1
#define HAVE_CACOSH 1
#define HAVE_CARG 1
#define HAVE_CASIN 1
#define HAVE_CASINH 1
#define HAVE_CATAN 1
#define HAVE_CATANH 1
#define HAVE_CCOS 1
#define HAVE_CCOSH 1
#define HAVE_CEXP 1
#define HAVE_CIMAG 1
#define HAVE_CLOG 1
#define HAVE_CONJ 1
#define HAVE_CPOW 1
#define HAVE_CPROJ 1
#define HAVE_CREAL 1
#define HAVE_CSIN 1
#define HAVE_CSINH 1
#define HAVE_CSQRT 1
#define HAVE_CTAN 1
#define HAVE_CTANH 1
#define HAVE_CABSF 1
#define HAVE_CACOSF 1
#define HAVE_CACOSHF 1
#define HAVE_CARGF 1
#define HAVE_CASINF 1
#define HAVE_CASINHF 1
#define HAVE_CATANF 1
#define HAVE_CATANHF 1
#define HAVE_CCOSF 1
#define HAVE_CCOSHF 1
#define HAVE_CEXPF 1
#define HAVE_CIMAGF 1
#define HAVE_CLOGF 1
#define HAVE_CONJF 1
#define HAVE_CPOWF 1
#define HAVE_CPROJF 1
#define HAVE_CREALF 1
#define HAVE_CSINF 1
#define HAVE_CSINHF 1
#define HAVE_CSQRTF 1
#define HAVE_CTANF 1
#define HAVE_CTANHF 1
#undef HAVE_CABSL
#undef HAVE_CACOSL
#undef HAVE_CACOSHL
#undef HAVE_CARGL
#undef HAVE_CASINL
#undef HAVE_CASINHL
#undef HAVE_CATANL
#undef HAVE_CATANHL
#undef HAVE_CCOSL
#undef HAVE_CCOSHL
#undef HAVE_CEXPL
#undef HAVE_CIMAGL
#undef HAVE_CLOGL
#undef HAVE_CONJL
#undef HAVE_CPOWL
#undef HAVE_CPROJL
#undef HAVE_CREALL
#undef HAVE_CSINL
#undef HAVE_CSINHL
#undef HAVE_CSQRTL
#undef HAVE_CTANL
#undef HAVE_CTANHL
#define NPY_RESTRICT restrict
#define NPY_RELAXED_STRIDES_CHECKING 1
#define HAVE_LDOUBLE_IEEE_DOUBLE_LE 1
#define NPY_PY3K 1
#ifndef __cplusplus
/* #undef inline */
#endif

#ifndef _NPY_NPY_CONFIG_H_
#error config.h should never be included directly, include npy_config.h instead
#endif
