The attached patch fixes a problem with potential extraneous breakpoints being found
by gdb on ia64.

The ia64_linux_stopped_by_watchpoint() routine is not verifying that it has
a SIGTRAP signal vs other signals and is only checking the si_code being
4.

The fix merely adds a check that if the signal is not a SIGTRAP, then we
are not at a hardware watchpoint.

Ok to commit?

2003-07-03  Jeff Johnston  <jjohnstn@redhat.com>

	* ia64-linux-nat.c (ia64_linux_stopped_by_watchpoint): Verify
	that we have a SIGTRAP before returning non-zero.