[RFA] gdb.base/shr1.c: Avoid preprocessor conflict on IRIX

[Kevin Buettner <kevinb@redhat.com>]

Another Irix change.  I don't really like this change; I played around
with compiler options in an attempt to avoid changing the source code,
but the only one that I came up with which might work is -Usgi.  But
that's dangerous because there may be a system header which depends upon
``sgi''.

So, I relunctantly submit the following patch for approval...

	* gdb.base/shr1.c (sgi): Rename to sgi_ to avoid conflict with
	implicit -Dsgi on Irix systems.

Index: testsuite/gdb.base/shr1.c
===================================================================
RCS file: /cvs/src/src/gdb/testsuite/gdb.base/shr1.c,v
retrieving revision 1.1.1.2
diff -u -p -r1.1.1.2 shr1.c
--- testsuite/gdb.base/shr1.c	28 Jun 1999 16:04:00 -0000	1.1.1.2
+++ testsuite/gdb.base/shr1.c	29 Jul 2002 22:28:00 -0000
@@ -4,7 +4,7 @@
 typedef float f;
 
 float sg = 5.5;
-int sgi = 2;
+int sgi_ = 2;
 static int sgs = 7;
 
 #ifdef PROTOTYPES
@@ -23,7 +23,7 @@ int x;
   }
   mumble = 7.7;
   sg = 6.6;
-  sgi++;
+  sgi_++;
   sgs = 8;
   printf("address of sgs is 0x%x\n", &sgs);
   return 2*x;