2012-02-20 Pedro Alves <palves@redhat.com>

2012-02-20  Pedro Alves  <palves@redhat.com>

	General cleanup, make output test messages unique, and build
	different executable files for the non-threaded and threaded
	cases.

	* gdb.threads/attach-into-signal.exp (binfile, escapedbinfile):
	Delete.
	(executable_nothr, executable_thr): New globals.
	(top level): Adjust to delete both executables.
	(corefunc): New parameter $executable.  Set $pf_prefix instead of
	hand writing a prefix in tests.  Issue a clean_restart and enable
	lin-lwp debug output here.
	(top level): Adjust.  Use build_executable.  Don't start gdb here,
	and don't enable lin-lwp debug output here.
	* gdb.threads/Makefile.in (EXECUTABLES): Adjust.