* fhandler_clipboard.cc: new file

* Makefile.in: include fhandler_clipboard.o in DLL_OFILES list.
* fhandler.h: add FH_CLIPBOARD to the devices enum.
(fhandler_dev_clipboard): new
* path.cc (windows_device_names): add "\\dev\\clipboard"
(get_device_number): check for "clipboard"
* dcrt0.cc: declare a few more functions from winuser.h
* dtable.cc (dtable::build_fhandler): check for FH_CLIPBOARD in
switch().

winsup/cygwin/dtable.cc

@@ -299,6 +299,9 @@ dtable::build_fhandler (int fd, DWORD dev, const char *name, int unit)
       case FH_MEM:
 	fh = new (buf) fhandler_dev_mem (name, unit);
 	break;
+      case FH_CLIPBOARD:
+	fh = new (buf) fhandler_dev_clipboard (name);
+	break;
       default:
 	/* FIXME - this could recurse forever */
 	return build_fhandler (fd, name, NULL);