BLD Add DISTDIR variable. ### Description

Adds `DISTDIR` env variable that points to the directory where libraries should be copied to when building shared libraries with recipe.

### Checklists

- [x] Add new / update outdated documentation

package:
  name: cligj
  version: 0.7.2
source:
  url: https://files.pythonhosted.org/packages/73/86/43fa9f15c5b9fb6e82620428827cd3c284aa933431405d1bcf5231ae3d3e/cligj-0.7.2-py3-none-any.whl
  sha256: c1ca117dbce1fe20a5809dc96f01e1c2840f6dcc939b3ddbb1111bf330ba82df
test:
  imports:
    - cligj
requirements:
  run:
    - click
about:
  home: https://github.com/mapbox/cligj
  PyPI: https://pypi.org/project/cligj
  summary: Click params for command line interfaces to GeoJSON
  license: BSD

package:
  name: cligj
  version: 0.7.2
source:
  url: https://files.pythonhosted.org/packages/73/86/43fa9f15c5b9fb6e82620428827cd3c284aa933431405d1bcf5231ae3d3e/cligj-0.7.2-py3-none-any.whl
  sha256: c1ca117dbce1fe20a5809dc96f01e1c2840f6dcc939b3ddbb1111bf330ba82df
test:
  imports:
    - cligj
requirements:
  run:
    - click
about:
  home: https://github.com/mapbox/cligj
  PyPI: https://pypi.org/project/cligj
  summary: Click params for command line interfaces to GeoJSON
  license: BSD
