Merge pull request #171 from hintjens/master

Fixed up zyre_log_connect/destroy
Fix conversion to char *.
Merge pull request #172 from mvala/master

Fix conversion to char *.
Removed -Wno-unused and compilation fixes
Removed debug info, mistake from previous commit
Merge pull request #174 from mvala/master

Removed -Wno-unused and compilation fixes
Added zyre_dump and zyre_node_dump to print information about current zyre node
Merge pull request #175 from mvala/master

Added zyre_dump and zyre_node_dump to print information about current zy...
Updated autoconf macros