Add a "-a/--address" option to "thread until". You can specify one or more...

Add a "-a/--address" option to "thread until".  You can specify one or more line numbers (as arguments)
and/or one or more addresses (with -a) and until will stop at the first one of  thesepoints it hits,
or on exit from the function if you leave the function before hitting any of these stop points.

<rdar://problem/12438270>

llvm-svn: 228370