* 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/cygwin/testsuite/winsup.api/crlf.c

@@ -237,7 +237,7 @@ get_bytestream(Buffer *buf)
 
 char dataname[] = "crlf.dat";
 
-int verbose=1;
+int verbose=0;
 void
 v(char *fmt, ...)
 {