EMI: Parse tex coords from sprite files. Fixes #978
EMI: Only update sector sort order if the actor is following walkboxes.
EMI: If a sort order is specified for an actor that is attached to another, use the specified sort order instead of the parent's one.
EMI: If sort orders are equal, compare distance to camera.
EMI: Enable drawing of mask sprites.
EMI: Return the effective sort order in GetActorSortOrder.
EMI: Parse per-texture blending mode from model data.
EMI: Enable alpha blending if the mesh face has a flag set.

This fixes drawing of the shadow mesh in the set unc when Guybrush is under the lights.
EMI: Parse sprite Z offset.
EMI: Always write sprites to the depth buffer.
EMI: Do not disable writing to color buffer if an actor's sort order is >= 100.

Fixes invisible Guybrush in the set unc.
EMI: Fix parsing of sprite flags. Fixes #960
EMI: Parse light name from shadow data.
TINYGL: Always pass the depth test if TGL_DEPTH_TEST is disabled.
EMI: Disable lighting for actors that have lightMode == LightNone in OpenGLS.
EMI: Fix matrix concatenation order when drawing sprites in OpenGLS.
EMI: Fix alpha test in OpenGLS.