adding entry_refs and BMessages. Lots of stuff for specifiers and also for
sending replies (with thanks to Mike Nordell).
git-svn-id: file:///srv/svn/repos/haiku/trunk/current@3295 a95241bf-73f2-0310-859d-f6bbb57e9c96
BMessageField) for the "template madness" version. Also included is
BDataBuffer which is a little reference counting raw data container.
git-svn-id: file:///srv/svn/repos/haiku/trunk/current@2955 a95241bf-73f2-0310-859d-f6bbb57e9c96