Fiddle with the heuristic about where to set the stop point in a nested inline...

Fiddle with the heuristic about where to set the stop point in a nested inline stack when we get there by breakpoint.  If we hit a user breakpoint, I set the stop point to the bottom-most frame 'cause that's what we did before.

<rdar://problem/12258999> Setting breakpoint in always inline function is stopping in function above it

llvm-svn: 163439