Patch: for 3.1: fix PR 6314

[David S. Miller]

   From: Tom Tromey <tromey@redhat.com>
   Date: 19 Apr 2002 23:32:14 -0600

   The `-R' option is already in use by gcc on some platforms, though it
   is not documented.  We inadvertently made gcj conflict with this.
   
   This patch changes the name of the option to -P.
 ...
   Ok to commit?  I think this is important for the branch.  This option
   has never been in a release before, so now is the best time to change
   it.

I approve this from a GCC standpoint, however you need a Java person
to appove before you may install the change.