* Added Run/Step* buttons.
* Added some handling for selection in the thread list.
* Extended listener mechanisms all over the place (in models and views).
* The team debugger now gets the initial states for the team's threads.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31097 a95241bf-73f2-0310-859d-f6bbb57e9c96