Revision 639bf163

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Various interwoven changes to Materials system:

Fixed bottleneck with the Material.name to Decoration/Reflection/Generator association linking. We now resolve once, at Material Bind creation time for all definition selection conditions (iwad, noiwad, ext, etc...).
Began revising the Material precaching scheme in preparation for further changes.
Added GLTextureInst.data.texture.colorAmplified and updated GLTexture_Prepare() to store both the average and amplified average texture colors.
Added MaterialSnapshot.colorAmplified - used with glowing planes and wall glow and taken from GLTextureInst (todo: this should be expanded upon once we have Materials tick'ing to allow for animation with a Stage system like that used for Particles).
Reworked the implementation of the 'fullbright' concept:
- Materials definitions may now define a Glow strength. The old glow flag has been removed.
- Internally 'fullbright' is now represented as Glow = 1 (also used as a wall glow strength multiplier).
Implemented both Map.decoratedSurfaceList and Map.glowingSurfaceList - lists of surfaces with those attributes and maintained accordingly by Surface.setMaterial()
Make use of the new surface lists when projecting glow lumobjs and plotting and projecting decorations.

Doomsday Engine