Avoid crash in ~LightsDriver_SystemMessage (#1663)

* Avoid crash in ~LightsDriver_SystemMessage

This will avoid a crash caused by the fact LIGHTSMAN is destroyed
after the other MAN objects

* Rework code path for turning lights off on exit

Calls to LightsDriver::reset removed from each driver to avoid any crashes

LightsDriver::reset renamed to Rest to match surrounding style

Added LightsManager::TurnOffAllLights, called before XXXMAN objects are deleted

src/arch/Lights/LightsDriver_Linux_PIUIO.cpp

@@ -32,7 +32,6 @@ LightsDriver_Linux_PIUIO::LightsDriver_Linux_PIUIO()
 
 LightsDriver_Linux_PIUIO::~LightsDriver_Linux_PIUIO()
 {
-	LightsDriver::reset();
 	if( fd >= 0 )
 		close(fd);
 }