Fix various bugs.

	* dejagnu/gdb-stub-extra.exp: Remove trailing spaces.  Create
	gdb_stub_info if it doesn't exist.
	(gdb_stub_add_breakpoint): Use -2 return for timeout.  Check for
	CPU timeout earlier.
	(gdb_stub_wait): Created.
	* get-ip.sh: Correct argument handling.
	* run-tests.sh: Record list of ports created.
	(run_check): Use header function for message. Report time at start
	and end of message.
	(list_push, list_pop, list_delete): Functions created.