* testsuite/winsup.api/winsup.exp: ignore stdout by default

* testsuite/winsup.api/crlf.c: non-verbose by default

* winsup.h: prune out windows headers we don't normally need
* assert.cc: add wingdi.h and winuser.h
* fhandler_console.cc: ditto
* fhandler_windows.cc: ditto
* select.cc: ditto
* spawn.cc: ditto
* strace.cc: ditto
* tty.cc: ditto
* window.cc: ditto
* hinfo.cc: add winsock.h
* syscalls.cc: add winnls.h
* uinfo.cc: ditto

* include/windows.h: optimize non-inclusion of repeat headers

winsup/w32api/include/windows.h

@@ -98,13 +98,27 @@
 #include <basetyps.h>
 #include <excpt.h>
 #include <winbase.h>
+#ifndef _WINGDI_H
 #include <wingdi.h>
+#endif
+#ifndef _WINUSER_H
 #include <winuser.h>
+#endif
+#ifndef _WINNLS_H
 #include <winnls.h>
+#endif
+#ifndef _WINVER_H
 #include <winver.h>
+#endif
+#ifndef _WINNETWK_H
 #include <winnetwk.h>
+#endif
+#ifndef _WINREG_H
 #include <winreg.h>
+#endif
+#ifndef _WINSVC_H
 #include <winsvc.h>
+#endif
 
 #ifndef WIN32_LEAN_AND_MEAN
 #include <commdlg.h>