[platform-debug-dev] retargettable actions

[Darin Wright <Darin_Wright@xxxxxxxxxx>]

I have released an initial stab at retargettable breakpoint actions to 
HEAD. Currently, "run to line" and "toggle line breakpoint" are supported 
as global retargettable actions. I will be migrating method breakpoints 
and watchpoints soon. In order to do this, I had to create a new action 
set in the debug platform, called "Breakpoints". It appears automatically 
in new workspaces, but you have to turn it on in existing workspaces to 
get the "toggle line breakpoint" action.

Darin