* gdb.threads/watchpoint-fork.exp (test): Use

	* gdb.threads/watchpoint-fork.exp (test): Use
	standard_output_file.  Don't declare objdir.
	* gdb.threads/attach-into-signal.exp: Use standard_testfile,
	standard_output_file.
	* gdb.threads/attach-stopped.exp: Use standard_testfile.
	* gdb.threads/bp_in_thread.exp: Use standard_testfile,
	clean_restart.  Remove incdir.
	* gdb.threads/corethreads.exp: Use standard_testfile.
	* gdb.threads/execl.exp: Use standard_testfile,
	standard_output_file, clean_restart.
	* gdb.threads/fork-child-threads.exp: Use standard_testfile,
	clean_restart.
	* gdb.threads/fork-thread-pending.exp: Use standard_testfile,
	clean_restart.
	* gdb.threads/gcore-thread.exp: Use standard_testfile.  Remove
	incdir.
	* gdb.threads/hand-call-in-threads.exp: Use standard_testfile,
	clean_restart.  Remove incdir.
	* gdb.threads/ia64-sigill.exp: Use standard_testfile.
	* gdb.threads/interrupted-hand-call.exp: Use standard_testfile,
	clean_restart.  Remove incdir.
	* gdb.threads/killed.exp: Use standard_testfile, clean_restart.
	Remove incdir.
	* gdb.threads/leader-exit.exp: Use standard_testfile.
	* gdb.threads/linux-dp.exp: Use standard_testfile, clean_restart.
	* gdb.threads/local-watch-wrong-thread.exp: Use standard_testfile,
	clean_restart.
	* gdb.threads/manythreads.exp: Use standard_testfile,
	clean_restart.  Remove incdir.
	* gdb.threads/multi-create.exp: Use standard_testfile,
	clean_restart.
	* gdb.threads/no-unwaited-for-left.exp: Use standard_testfile.
	* gdb.threads/non-ldr-exc-1.exp: Use standard_testfile.
	* gdb.threads/non-ldr-exc-2.exp: Use standard_testfile.
	* gdb.threads/non-ldr-exc-3.exp: Use standard_testfile.
	* gdb.threads/non-ldr-exc-4.exp: Use standard_testfile.
	* gdb.threads/pending-step.exp: Use standard_testfile,
	clean_restart.  Remove incdir.
	* gdb.threads/print-threads.exp: Use standard_testfile,
	clean_restart.  Remove incdir.
	* gdb.threads/pthread_cond_wait.exp: Use standard_testfile,
	clean_restart.  Remove incdir.
	* gdb.threads/pthreads.exp: Use standard_testfile, clean_restart.
	Remove incdir.
	* gdb.threads/schedlock.exp: Use standard_testfile.  Remove
	incdir.
	* gdb.threads/sigthread.exp: Use standard_testfile,
	clean_restart.
	* gdb.threads/staticthreads.exp: Use standard_testfile,
	clean_restart.  Remove incdir.
	* gdb.threads/switch-threads.exp: Use standard_testfile,
	clean_restart.  Remove incdir.
	* gdb.threads/thread-execl.exp: Use standard_testfile,
	clean_restart.  Remove incdir.
	* gdb.threads/thread-find.exp: Use standard_testfile,
	clean_restart.
	* gdb.threads/thread-specific.exp: Use standard_testfile,
	clean_restart.  Remove incdir.
	* gdb.threads/thread-unwindonsignal.exp: Use standard_testfile,
	clean_restart.  Remove incdir.
	* gdb.threads/thread_check.exp: Use standard_testfile,
	clean_restart.  Remove incdir.
	* gdb.threads/thread_events.exp: Use standard_testfile.  Remove
	incdir.
	* gdb.threads/threadapply.exp: Use standard_testfile,
	clean_restart.  Remove incdir.
	* gdb.threads/threxit-hop-specific.exp: Use standard_testfile,
	clean_restart.  Remove incdir.
	* gdb.threads/tls-nodebug.exp: Use standard_testfile,
	clean_restart.
	* gdb.threads/tls-shared.exp: Use standard_testfile,
	clean_restart, standard_output_file.
	* gdb.threads/tls-var.exp: Use standard_testfile,
	standard_output_file.
	* gdb.threads/tls.exp: Use standard_testfile, clean_restart.
	Remove incdir.
	* gdb.threads/watchthreads-reorder.exp: Use standard_testfile.
	* gdb.threads/watchthreads.exp: Use standard_testfile.  Remove
	incdir.
	* gdb.threads/watchthreads2.exp: Use standard_testfile,
	clean_restart.  Remove incdir.