Update quarry.lua

Added Mine and Puhfa's updates.

-- The quarry_dig function now uses VoxelManip to edit the nodes as well as reading them instead of using the dig_node function. in the process we hope to remove some overhead, to help with this, we have changed amount of nodes it digs, instead of 1 at a time, it will dig a row at a time but less often(currently set to every 17 Seconds, but can be changed by adjusting the abm interval).

-- Form-spec has been changed slightly to work with the a feature, allowing cobble to be destroyed before it reaches any inventory thus eliminating overflow for people who don't actually want the cobble. there's a button that allows players to turn this feature on and off in the form spec.