any public header.
* Replaced a good deal of the MessageDeliverer's DeliverMessage() versions
by more general ones using the new interface MessagingTargetSet to represent
a set of targets. This simplifies the usage in cases where the caller doesn't
already have the targets in a supported representation.
* Implemented a first approximation of the shutdown process. There is no
GUI yet. Only superficially tested under R5.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@13417 a95241bf-73f2-0310-859d-f6bbb57e9c96