Merge pull request #76 from hintjens/master

Broker drops PID after fork
Update pkg-config file

remove deps on zmq, zyre, czmq, link to new client lib rather
than old.
Merge pull request #77 from rpedde/master

Update pkg-config file
Merge pull request #80 from hintjens/master

Various small fixes
Merge pull request #83 from hintjens/master

Detects changed config file and reloads automatically
Merge pull request #87 from hintjens/master

Moved to actor model for zpipes_server
Merge pull request #92 from hintjens/master

Zyre set-up is now switched on/off via actor API
Merge pull request #93 from hintjens/master

Pull values from config file before starting Zyre
Regenerated codecs
Added logging for zyre/interface config setting

Also some other minor fixes.