* Makefile.in: Eliminate WINSUP_DEPS.

* cygpath.cc: Reorganize includes to accomodate sys/cygwin.h changes.
* mkgroup.c: Ditto.
* mkpasswd.c: Ditto.
* mount.cc: Ditto.  Eliminate use of cygwin source specific includes.
* ps.cc: Ditto.
* cygwin.cc: Eliminate obsolete file.

winsup/utils/mount.cc

@@ -14,8 +14,6 @@ details. */
 #include <mntent.h>
 #include <windows.h>
 #include <sys/cygwin.h>
-#include "winsup.h"
-#include "external.h"
 
 #ifdef errno
 #undef errno