make gt stones compatible with chisel variants

[e99999]

but no support from other mods to turn into gregtech stone, because you should just turn those off.

[netmc]

I normally just add a chisel recipe for the blocks so you can change the block type as needed using the chisel. I normally use minetweaker to make this change, but it would be nice to have it added to the chisel recipes automatically. There are times you will want one version of the block vs others depending on what is being built and which textures you prefer. Not all gt stones have all the various vanilla crafting options.