Added dns_util.h from ohybridproxy.
Start of work on hcp_sd. Still bit or three missing.
Added local tlv change notification support to subscribers; they're
instant, unlike 'global' tlvs which reflect published network state.
Added hcp_io_getipv6.
First ~done SD version (but broken based on tests, TBD: Test on Linux and find out what is wrong).
Aha, initialized wrong tlv attr.
Added filling of padding bytes - now results are at least consistent.
Changed iteration #s in test_hcp_net to work with new name conflict handling too.
Merge branch 'master' of github.com:sbyx/hnetd

Conflicts:
	src/hnetd.c
Added toggle to disable SD in net_sim.
Made it possible to disable HCP_PA spuport in net_sim via compile time option.
Added minimalist hcp-sd testsuite and refactored hcp code a bit to make it easier to do..
Some improvement of test_hcp_sd (and assorted bugfixing).