Ignore ctags file
Link using SDL2 libs
Move SDL initilization from init.c to graphics_wrapper.c
Fix a warning with a bogus return code.

I should really do some sane error handling at some point...
Outline plan for revising draw_map.c
Move some more graphics initlization to graphics_wrapper.c
Updated map drawing to sdl2
Update command mapping keys to use scancodes
Free the temp surface when generating map glyph textures
Link against SDL2_ttf
Fix clear_rect, nuke draw_rect
Nuke references to draw rect (use RenderPresent instead for now)
TODO note
Update render text to use SDL2 functions
Check scancodes when looking up commands
Map drawing with SDL2

It's slow as hell right now because we're repeating so much work copying
surfaces to textures when we don't need to.  I'll fix that soon.  Also,
messages aren't rendering/are vanishing before they can be read.
Messages now show up again
Pull point struct into its own header
Initial draft of sprite cache code
Build instructions for sprite, point