new i2c sensor (tmp175) added

Signed-off-by: Patrick Hieber <p@trickhieber.de>
Change license to GPLv3 in order to be ethersex compliant.

Signed-off-by: Patrick Hieber <p@trickhieber.de>
license fix
tmp175 in menuconfig
Merge branch 'master' of github.com:phieber/ethersex
make rs485 transmit enable consistent in all modules
added eltakoms to usart-config.sh script
fixed C&P error
changed DMX timing according to DMX512-A recommendation
use atomic locking function for usart setup
again some C&P error
DMX transmit completely interrupt driven
Merge branch 'e6-upstream2' of github.com:sauttefk/ethersex into e6-upstream2

Conflicts:
	protocols/dmx/dmx.c
MODBUS also uses RS485 - rewrite for global RS485 TE config
MODBUS RS485
Memory leak fixed.
Memory leak fixed.
Memory leak fixed.
Wrong number of scanf parameters fixed.
Resource leak fixed.
Wrong number of scanf parameters fixed.