Switches the slime look up table to be a texture, since I guess intel
drivers are terrible and putting the array in the shader makes it
extremely slow.
Also, a few minor changes:
- removed art-groups from the test-zone levels since this causes the
compiler to re-decompile the game, and makes the launcher slower. (left
it in commented out)
- Switched `decompile_code` to false by default in jak 2, in case people
run the decompiler and don't want to wait forever
- Fixed build warnings
water111