Added missing notification to BonjourServices

Ignore-this: 706250e1c2266f934c4ff29d0f3165e2

darcs-hash:20100408132853-1e3d8-0f0404efbc16731a5c003ffbfc185f7923e33bb8
Added a timeout when sending (re-)INVITEs

Ignore-this: a69c2644b4431a17afe034f0ebc375eb

darcs-hash:20100408133353-1e3d8-51721f99a5c7efa5b5e8d6759e06059e4f2e9a10