* sysconf.cc (get_nprocs): New function.

(get_nprocs_conf): Ditto.
	(get_avphys_pages): Ditto.
	(get_phys_pages): Ditto.
	* cygwin.din: Export them.
	* include/sys/sysinfo.h: New header, decalre above new functions.
	* include/cygwin/version.h (CYGWIN_VERSION_API_MINOR): Bump.
	* posix.sgml: Mention them as GNU extensions.

winsup/cygwin/include/cygwin/version.h

@@ -371,12 +371,13 @@ details. */
       215: CW_EXIT_PROCESS added.
       216: CW_SET_EXTERNAL_TOKEN added.
       217: CW_GET_INSTKEY added.
+      218: Export get_nprocs, get_nprocs_conf, get_phys_pages, get_avphys_pages.
      */
 
      /* Note that we forgot to bump the api for ualarm, strtoll, strtoull */
 
 #define CYGWIN_VERSION_API_MAJOR 0
-#define CYGWIN_VERSION_API_MINOR 217
+#define CYGWIN_VERSION_API_MINOR 218
 
      /* There is also a compatibity version number associated with the
 	shared memory regions.  It is incremented when incompatible

winsup/cygwin/include/sys/sysinfo.h

@@ -0,0 +1,27 @@
+/* sys/sysinfo.h
+
+   Copyright 2009 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. */
+
+/* sys/sysinfo.h header file for Cygwin.  */
+
+#ifndef _SYS_SYSINFO_H
+#define _SYS_SYSINFO_H
+
+#include <sys/cdefs.h>
+
+__BEGIN_DECLS
+
+extern int get_nprocs_conf (void);
+extern int get_nprocs (void);
+extern long get_phys_pages (void);
+extern long get_avphys_pages (void);
+
+__END_DECLS
+
+#endif /* _SYS_SYSINFO_H */