SDL2 Alpha
Replacing tick based try_update.
Disabling cache to avoid SDL2 bugout.
Removing my fingerprint from makefile.
Fixing input lag (my fault).
cata_tiles update 1
cata_tiles update 2
Change all SDL_Surface to SDL_Texture

Had to rearrange initialization to make things work right.
Fix zoom + misc cleanup
Tweaking rotation logic.

If this doesn't work I may have to bring back the rotation cache.
Hunch #1

First of two hunches I can trying to get the offsets working right
without having to use a rotation cache.
Fallback categories for tile drawing.

For instance, "unknown_monster" will serve as fallback for monsters without sprites, and "unknown_monster_MAMMAL" will serve as fallback for species MAMMAL without sprite. Similarly. "unknown_item" will serve as fallback for items without sprite, and "item_unknown_CONTAINER" will serve as fallback for containers with no sprite.
Small changes to HoderTileset to demonstrate tile category fallback behavior.
Merge SDL2.0 goodness and tile fallbacks.

Conflicts:
	src/options.cpp