add: trim_trailing_slashes(fname);
context: int do_mkdir(char *fname, mode_t mode){	int l;	if (dry_run)		return 0;	CHECK_RO;		/* Some BSD systems cannot make a directory if the name	 * contains a trailing slash.	 * <http://www.opensource.apple.com/bugs/X/BSD%20Kernel/2734739.html> */	if ((l = strlen(fname))  &&  (fname[l-1] == '/'))		fname[l-1] = '/';		return mkdir(fname, mode);}