Introduce IPv6 support in client
Introduce IPv6 support in server
Merge pull request #3 from Minoru/ipv6_support

IPv6 support
prevent sigsegv in msg_unpack
server.c: add expandtab modeline
use ${CC} istead gcc in Makefile
Merge pull request #4 from noktoborus/develop

prevent sigsegv in msg_unpack