[Cin] Checked in tweaked patches from Andrew - EXR, PNG, and TIFF

[Phyllis Smith]

The latest GIT checkin consists of mostly patches that Andrew has been
working with a couple of tweaks and other small bugs in other areas by gg.

What you will see for Render choices that new:
  EXR - choices of B44, B44A, DWAA, DWAB
  PNG - now has added choices in the render video wrench to include
Compression level 0-9 and Depth 8/16
  TIFF - new choices of LZW, LZWMA, Deflate
We have done minimal testing and probably Andrew will test to make sure we
got all of his patches correct!
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