Merge pull request #188 from prymitive/carbon_resolve_hostnames

allow connecting to carbon server using hostname resolved on every cycle...
free carbon_address memory
completed routing cache instruction
added 'equal' routing func
removed some unbit useless definition
added a commodity mongodb plugin for system without mongoclient shared library
implemented --emperor-on-demand-ext
added --emperor-on-demand-exec
added %V magic var (contains UWSGI_VERSION)
added rpc router instruction
added startswith endswith and regexp/re routing instructions
improved emperor on demand mode
fixed build without pcre
fixed rack exceptions management
removed UWSGI_INI
prepare for uWSGI 1.9.1
added uwsgi_main.c
Unbit fixes
another memory report fix for Unbit
added build profile for ubuntu ppa