Update Doxyfile
Merge pull request #156 from lclc/develop

Update Doxyfile
fix zmq2 name in config
only compile zmq4 if needed
Merge pull request #157 from da2ce7/zmq4

ZMQ config fix
Merge pull request #146 from murrekatt/develop

Travis IRC notification and concurrent build changes
bump version number to 0.92.c
Merge pull request #158 from da2ce7/develop

bump version number to 0.92.c