Unity: Add lighting shaders from older Unity games
Unity: Add fixes for older lighting shaders

The vertex shader is legitimately different to the original, but the
same fix should work.

The pixel shaders were virtually identical to the existing fixes, but
with one slightly different constant value.

Should generally be safe to paste this fix with both versions in any
Unity game using the standard shaders.
Unity: Add DefPSViewSizeConst to ini template

Not used in the generic fix, but useful to have