pio.c - remove redundant include (lualib.h includes lua.h)
STM32F4 - uip-conf.h - replace with identical file with less restrictive copyright
uip-conf.h (various platforms) - note inconsistency -
comment says UIP_CONF_UDP_CHECKSUMS should be 0, but it is 1
so which is right?  (comment or code)
LM3S - ethernet - make platform net functions use their arguments
rather than assuming they are dealing with uip_buf
LM3S - ek-lm3s6965.lua - fix cpu, was lm3s8962 rather than lm3s6965
STM32 - #elseif -> #elif
enable cdc on mizar32a, b and soldercore (had uart=cdc, but cdc not built)
Merge pull request #50 from ecdr/MiscUpdates

LM3S - correct cpu in ek-lm3s6965 board file, ethernet functions, enable cdc in board files
Fix Mizar32 default IP from 193.168.1.10 to 192.168.1.10

A typo in the new build system config files set IP to 193.* with gateway
192.* which can never work.
Add check for console on USB serial port but USB CDC not enabled.

Before this, you could put the console on USB CDC without BUILD_USB_CDC
and eLua compiled OK but nothing worked. This change makes it spit out
an appropriate message if that should happen again.