EMI: Parse per-texture blending mode from model data.
EMI: Enable alpha blending if the mesh face flags has the 16th bit 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.