MFC r201512:
Modernize scandir(3) and alphasort(3) interfaces according to the IEEE
Std 1003.1-2008.
MFC r201602:
Move scandir(3) and alphasort(3) into XSI namespace.
MFC r201604:
Use thunks to adapt alphasort-like interface to the comparision function
required by qsort() and qsort_r().
MFC r202556 (by ache):
Use strcoll() in opendir() and alphasort(). Remove some comments.
MFC r202572 (by ache):
Revert to using strcmp() for opendir().
MFC r202677 (by ache):
Style.
MFC r202679 (by ache):
Style: rename internal function to opendir_compar().
MFC r202691 (by ache):
For alphasort(3) add reference to strcoll(3).
MFC r202693 (by ache):
Style: reword comment.