Fix anvil shift click to put in input or weld slots and not output slot.
Fix blueprint shift-click into anvil. Works with all plans now.
Undo texture name changes from this branch.

This reverts commit 47012a1d6a7168458e1bc6bdeabb9f11d0f4859c, so this
branch is only the anvil fixes.
Merge pull request #41 from VegasGoat/AnvilShiftClick

Anvil shift click fixes.