Added duplicate ID selection collision handling.
iface: fix inconsistencies with dhcpv4 data
Add DHCPv4 option propgation logic
Add README
iface: add support for prefix routes to announce MSR
Added uloop mock to TODO.
Fixed tlv_sort memory leaks.
Add more info to README
Add hnet-ifup and hnet-ifdown instructions
Terminate pa_data structures
Merge branch 'master' into new_pa

Conflicts:
	src/hncp.c
	src/hncp.h
	src/hncp_pa.c
	src/iface.h
	src/pa.c
	test/net_sim.h