new ppc32 GOT/PLT support

[Jakub Jelinek]

On Wed, May 25, 2005 at 11:58:10PM +0930, Alan Modra wrote:
> 	* sysdeps/unix/sysv/linux/powerpc/powerpc32/socket.S (stackblock):
> 	Comment.
> 	(__socket): Bomb if NARGS >= 7.  Invoke CGOTSETUP and CGOTRESTORE.

Is this necessary?  socket.os will never appear in librt.so and outside of
IS_IN_librt these macros expand to nothing.

	Jakub