Reformatting only
Reintroduce GEN versions of span drawers

Purely templated approach is agonizingly slow when in debug build to the
point that testing becomes impossible - unfortunate. Maybe when VC++
supports constexpr?
Various changes

Added finale values for PSX (not finished), fixed a bug w/PU_PERMANENT
blocks in z_native when debugging is enabled, support for 320x240
background art, refactoring of cast text drawing.
Bug fix for E_ArgAsStateLabel

Must be passed down the arglist_t, not assume it came from mo->state.
GMI changes

Moved most editable values for PSX mission to its EDF instead of
hardcoding them. Experimental support for setting global scaling factors
for vissprites.
PSX lighting tweaks

Sector light levels are about dead-on now. Changed up slow glows to use
a new thinker because they need a non-integral speed; restored
GlowThinker to its previous state. Support for PSX sector type 204.
Cast tweaks

Wrote a function that allows cast members to refer to states by DECORATE
labels as well as by global state names. Also did some C++ style
cleanup.
C++ style cleanup only
Dead code removal
Merge branch 'master' of https://github.com/team-eternity/eternity