Fix a typo
New shader keyword: q3map_lightmapNoStitch

q3map_lightmapNoStitch prevents lightmap stitching.
Brush stitching: lower epsilons

Change epsilons from 0.1 to 0.05 for brush face stitching. To remove
some bugs with q3map_tessSize.
q3map_textureSize support for patches

Patch texturing wasn't backscaled when q3map_textureSize was set. It
makes texturing to behave differently on brushes and patches. Not it's
fixed (if q3map_textureSize is set and it is different from editor
image, patc UV is backscaled to match editor).
Surface meta: soften some checks when grouping meta triangles to surfaces

Now allows slight color and normal difference.
Win32/64 build