I'm somehow coding things.

-Added independent blast resistance values for all Stonecutter blocks.
-Fixed Stonecutter block harvest levels not functioning properly.
-Netherrack Stonecutter blocks can now infinitely support Fire in the
same manner as normal Netherrack.
-Attempted to get Netherrack Stonecutter Brick blocks to not support
Fire (since vanilla Nether Bricks don't) but failed, since I can't
figure out where the hell to find the block's metadata.