Documented headers.lua
Update copyright date everywhere
Remove RCSID from files
Move version back to 2.1 rather than 2.1.1
Fixed url package to support ipv6 hosts
Changed "domain" to "family" in tcp and udp structures
Implemented getfamily methods
Conflicts in options.c were just due to independent small functions
being close to each other.
unix.c in mwild was broken, it wasn't using LUASOCKET_API.
serial.c needed luaL_reg renamed, and to use LUASOCKET_API.
makefile didn't respect standard DESTDIR and prefix makefile
variables, and didn't allow LUAV variable to select lua version to build
against.
I've tested the top-level install-both target builds and installs
against both lua5.1 and lua5.2, but not done further testing.
Conflicts:
README
config
gem/ltn012.tex
makefile
src/makefile
src/options.c
src/options.h
src/tcp.c
src/usocket.c
