timers_unix.c : remove sigint and sigterm catch
sdo : Allow multiple servers
The sdo transfer struct is not anymore referenced by server's node id but by
client or server number in the OD. Node id is not relevant in SDO transfert.

To generate message.pot file:

	python mki18n.py -p --domain=objdictgen
	
To generate .mo files for all languages:

	python mki18n.py -m --moTarget=../locale --domain=objdictgen