powerpc*-*-gnu configuration support

[Roland McGrath]

> How about the following plan of attack:
>   - submit patches to document the -mcall-gnu flag, and any other flag 
>     which you feel is appropriate
>   - for other flags which need to be cleaned up or removed, file problem 
>     reports in GCC GNATS, where they will (hopefully) be cleaned up eventually

Hokey doke.  Here follows the patch for the former.  I used the godforsaken
gccbug script for the latter, and maybe it actually posted a PR, I can't tell.


2002-01-03  Roland McGrath  <roland@frob.com>

	* doc/invoke.texi (RS/6000 and PowerPC Options): Add -mcall-gnu.

Index: invoke.texi
===================================================================
RCS file: /cvs/gcc/gcc/gcc/doc/invoke.texi,v
retrieving revision 1.94
diff -u -b -p -r1.94 invoke.texi
--- invoke.texi	2002/01/02 13:58:59	1.94
+++ invoke.texi	2002/01/03 22:06:01
@@ -6882,6 +6882,11 @@ operating system.
 On System V.4 and embedded PowerPC systems compile code for the
 Linux-based GNU system.
 
+@item -mcall-gnu
+@opindex mcall-gnu
+On System V.4 and embedded PowerPC systems compile code for the
+Hurd-based GNU system.
+
 @item -mcall-netbsd
 @opindex mcall-netbsd
 On System V.4 and embedded PowerPC systems compile code for the