Bugfix: modminer & x6500: Increment *->diff1 for all bad nonces, and do stats changes within stats_lock
Add LIFE_INIT2 status (safe to call functions, but not mining yet) for devices that want to report initialization status in their statline

Conflicts:
	driver-bitforce.c
	driver-ztex.c

Conflicts:
	driver-avalon.c
	driver-bitforce.c
	driver-modminer.c
	driver-x6500.c