Patch: for gcj, make -Wall imply -Wunused

[Tom Tromey]

I'm checking in this patch with Alex's approval.
This makes gcj a bit more like the C compiler.

2000-03-16  Tom Tromey  <tromey@cygnus.com>

	* lang.c (lang_decode_option): Enable -Wunused when -Wall given.

Tom

Index: lang.c
===================================================================
RCS file: /cvs/gcc/egcs/gcc/java/lang.c,v
retrieving revision 1.38
diff -u -r1.38 lang.c
--- lang.c	2000/03/14 05:01:04	1.38
+++ lang.c	2000/03/16 17:23:53
@@ -246,6 +246,9 @@
     {
       flag_wall = 1;
       flag_redundant = 1;
+      /* When -Wall given, enable -Wunused.  We do this because the C
+	 compiler does it, and people expect it.  */
+      warn_unused = 1;
       return 1;
     }