Minimalist help function + start on main.
Merge branch 'master' of github.com:sbyx/ohybridproxy

Conflicts:
	src/ohybridproxy.c
First iteration of dns_util header + it's testsuite.
Fixed, with tests for escaping cases too.
Got rid of resolv dependency.
Some initial work to get started on actual request handling code.
Added idea of N queries instead of one. It is useful (if not mandatory) for the additional record generation.
Added checks for left being <= 0.
First version which actually does correct nested resolving etc.
Some datastructure renaming + cleanup code added.
Added minimalist rewriting stuff that seems to work. Still missing rdata content rewriting.
Added bit work-in-progress dns_proto.h. It should (eventually) contain all dns _protocol_ structure definitions we need.
Some code added to include 'ready-cooked' payload data.
Fixed Linux compilation, fixed memory leaks, now mostly works(?).
Made dns_sd non-Apple library.
Added sanity check for d2m_produce_reply.
Add send path and fix some bugs