Modify ambient handling and forward projector lighting again to stamp out alpha fires.

Make tex cache not check size logic while performing validation.

Fix underwater water fog density modifier being used when not underwater.

Make underwater modifier not applied when not underwater.

Modify forward projector lighting to use falloff like the deferred lights.

Make tex cache not evaluate evictions for size during validation passes.

SL-11279 and SL-11273 fixes

SL-11273 FIXED [EEP] The beacon checkboxes in the Day Cycle window can only be changed while a keyframe is selected.

Tamp down more view-dependent refraction map fail.

Undo attenuation hacks and balance with deferred path projector lighting.

(engages AMBIENT_KILL, SUNLIGHT_KILL, and LOCAL_LIGHT_KILL defines in shaders to accomplish
  those tasks as required by each render mode).

Make terrain underwater shader not try to light said terrain.

Fix colorspace of reflected color in non-ALM shading.

Tweak transparency of water further.

Fix linear attenuation on forward projector lighting.

Revert setup of falloff to prev code.

Revert deferred water spec and tweak refl/refr blend.

Fix ambient light inputs to the renderer.

Fix 3rd sky shader w/ mistaken density mod conversion.

Make ambient clamp apply to all modes.

Tune ALM ambient clamp to match non-ALM.

SL-10625

Revert perf optimization to not wait for occlusion queries until there's a good chance they're complete
because Intel HD driver versions between 6471 and 6577 are broken and hang forever (6709 and 6861 are fixed).

SL-11220

Fix transport when no_atmo == 1 (HUD rendering) was in play.

SL-11112

Fix blend between reflected/refracted water maps (make less transparent)
and fix setting of water fog color alpha on low end to better match
prev behavior of setting the internal control value in that case.

SL-11213 No longer embedding the channel in the viewer release note urls. Update base URLs to match new viewer release note URL

Modify new spec response to better match old gloss response curve.
Tuned at 255, 192, 160, 128, 64, and 32 glossiness.

Adjust ambient clamp up to get closer match to release viewer for existing content.

Don't short-circuit getVisibleExtents as its side-effects are relevant.

Reduce spec bloom further.