fixed libapptest compilation


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@8079 a95241bf-73f2-0310-859d-f6bbb57e9c96

Added BRoster::Broadcast() tests and test app.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@1535 a95241bf-73f2-0310-859d-f6bbb57e9c96