Variant on https://github.com/andr3wmac/Torque3D/commit/06446b2b9996956310c14a61ca39abf7948c0563 getting rid of text2dlinear methodology and shifting to ingammaspace stateblock usage
A) Left out a prior   SS(inGammaSpace, D3DSAMP_SRGBTEXTURE, mDesc.samplers[i].inGammaSpace); entry (was commented in the original. is actually needed)
B) Corrects reflection linearization. requires exposing the gamma and hdr postfx to the reflection functionality.
Removes fallback to  GFXFormatR10G10B10A2 for the hdr postfx. it was causing corruption
Merge branch 'DS_LinearRev2' into Deferred_Shading2