Add WakeUp/AddBlock distinction

* WakeUp is for singular changes (block breaking for example). The simulator should check blocks around the position and discover other affected blocks as it sees fit
* AddBlock is for when you know a whole area is to be updated; chunk loading, or area wakeups for example
+ Prepares for correct handling of destroyed blocks after removal of SolidBlockHandler in the redstone simulator

src/ChunkMap.cpp

@@ -1330,7 +1330,7 @@ void cChunkMap::DoExplosionAt(double a_ExplosionSize, double a_BlockX, double a_
 	);
 
 	// Wake up all simulators for the area, so that water and lava flows and sand falls into the blasted holes (FS #391):
-	m_World->GetSimulatorManager()->WakeUpArea(cCuboid(
+	m_World->GetSimulatorManager()->WakeUp(cCuboid(
 		{bx - ExplosionSizeInt - 1, MinY, bz - ExplosionSizeInt - 1},
 		{bx + ExplosionSizeInt + 1, MaxY, bz + ExplosionSizeInt + 1}
 	));