* set_gfx_command part 2
* part 3
* get gfx/vtx from name; copy gfx/vtx
* gfx/vtx dynamic allocation lua
* gfx/vtx_new: don't take level/model/vanilla names
* Clean up gbi constants
* update example
* Isaac review; add gfx_get_next_command and vtx_get_next_vertex
* make all commands length 1; missing NULL checks
The birth of a custom user interface system.
Has the ability to draw things to the screen at native resolution
regardless of window size.
Components can be nested within one another to an arbitrary depth.
Text rendering is completely rewritten.
Text and images can be clipped by their parent container.
