Document '-x objective-c-header'

[Geoffrey Keating]

Tested by building on powerpc-darwin.

-- 
- Geoffrey Keating <geoffk@apple.com>

===File ~/patches/gcc-objcheaderdoc.patch===================
Index: ChangeLog
===================================================================
RCS file: /cvs/gcc/gcc/gcc/ChangeLog,v
retrieving revision 1.17631
diff -u -p -u -p -r1.17631 ChangeLog
--- ChangeLog	29 Apr 2003 20:42:54 -0000	1.17631
+++ ChangeLog	29 Apr 2003 20:44:45 -0000
@@ -1,5 +1,7 @@
 2003-04-29  Geoffrey Keating  <geoffk@apple.com>
 
+	* doc/invoke.texi (Overall Options): Mention -x objective-c-header.
+
 	* dwarf2out.c (output_call_frame_info): No need to output EH
 	unwind information if all_throwers_are_sibcalls.
 
Index: doc/invoke.texi
===================================================================
RCS file: /cvs/gcc/gcc/gcc/doc/invoke.texi,v
retrieving revision 1.270
diff -u -p -u -p -r1.270 invoke.texi
--- doc/invoke.texi	24 Apr 2003 15:53:22 -0000	1.270
+++ doc/invoke.texi	29 Apr 2003 20:44:46 -0000
@@ -813,7 +813,7 @@ the next @option{-x} option.  Possible v
 @example
 c  c-header  cpp-output
 c++  c++-header  c++-cpp-output
-objective-c  objc-cpp-output
+objective-c  objective-c-header  objc-cpp-output
 assembler  assembler-with-cpp
 ada
 f77  f77-cpp-input  ratfor
============================================================