HFS+, the FS on Darwin, is case insensitive. So this patch adjusts
filename_cmp.c to ignore the casing when comparing filenames on Darwin.
include/ChangeLog:
* filenames.h (HAVE_CASE_INSENSITIVE_FILE_SYSTEM): Define
on Darwin, as well as on the systems that use a DOS-like
filesystem.
libiberty/ChangeLog:
* filename_cmp.c (filename_cmp, filename_ncmp): Add handling of
HAVE_CASE_INSENSITIVE_FILE_SYSTEM.
From-SVN: r175762
* filename_cmp.c: Replace include of ctype.h by include of
safe-ctype.h.
(filename_cmp): Use TOLOWER instead of tolower for conversions
that are locale-independent.
* Makefile.in (filename_cmp.o): Add dependency on safe-ctype.h.
From-SVN: r124399
