Add XDR support.

* cygwin.din: Export xdr functions.
	* include/cygwin/version.h: Bump version.
	* cygxdr.cc: New.
	* cygxdr.h: New.
	* dcrt0.cc (dll_crt0_1): Print the (rare) xdr-related
	error messages to stderr.
	* Makefile.in: Add cygxdr.
	* posix.sgml: Add new XDR functions to list of implemented Solaris
	functions.

winsup/cygwin/cygxdr.h

@@ -0,0 +1,25 @@
+/* cygxdr.h: 
+
+   Copyright 2010 Red Hat, Inc.
+
+This file is part of Cygwin.
+
+This software is a copyrighted work licensed under the terms of the
+Cygwin license.  Please consult the file "CYGWIN_LICENSE" for
+details. */
+#ifndef _CYGXDR_H
+#define _CYGXDR_H
+
+extern "C"
+{
+
+typedef void (*xdr_vprintf_t)(const char *, va_list);
+
+xdr_vprintf_t xdr_set_vprintf (xdr_vprintf_t);
+
+void cygxdr_vwarnx (const char *, va_list);
+
+}
+
+#endif
+