PR gcov-profile/94570
	* ltmain.sh: Do not define HAVE_DOS_BASED_FILE_SYSTEM
	for CYGWIN.

	PR gcov-profile/94570
	* coverage.c (coverage_init): Use separator properly.

	PR gcov-profile/94570
	* filenames.h (defined): Do not define HAVE_DOS_BASED_FILE_SYSTEM
	for CYGWIN.

Co-Authored-By: Jonathan Yong <10walls@gmail.com>