Add dwa test images to dist (tarball) manifest.
Also drop README.win32 from tarball.  (Already removed from repo.)

[New Cmake-centric instructions covering builds for Windows and other
platforms to follow.]
Merge pull request #127 from openexr/tarball_contents_fix

Tarball contents fix
Fixing SSE2 byte interleaving path to work with short runs
Merge pull request #137 from karlrasche/interleaveByte2_sse_bug

Fixing SSE2 byte interleaving path to work with short runs
Merge remote branch 'upstream/develop'
Adding rawPixelDataToBuffer() function for access to compressed data read from scanline input files.

Changes from The Foundry to add rawPixelDataToBuffer(...) function to the OpenEXR library. This allows you to read raw scan lines into an external buffer. It's similar to the existing function rawPixelData, but unlike this existing function it allows the user to control where the data will be stored instead of reading it into a local buffer. This means you can store multiple raw scan lines at once and enables the decompression of these scan lines to be done in parallel using an application's own threads.