Update IA64 testcase from error to note. (PR 36901 fallout)

[Manuel López-Ibáñez]

2008/8/18 Steve Ellcey <sje@cup.hp.com>:
>
> I found an IA64 specific test that seems to have gotten missed in the patch
> that removed pedwarn0 and warning0 (PR 36901).  This patch updates the
> test.  I am guessing it can be considered obvious since it is the same
> change that was made to other tests so I will check it in
> unless someone objects.  Tested on IA64 HP-UX and Linux
>
> Steve Ellcey
> sje@cup.hp.com

Thanks for noticing this. Empty match strings are evil.

Would you mind using a less ambiguous match such as.

+extern float fr1; /* { dg-message "note: previous declaration of " } */

Thanks,

Manuel.