Commit:
http://github.com/jeremyselan/OpenColorIO/commit/7ffb711edea3b4b3c4aa0ad046c15de8f70b936e

I added a call to get the cacheID for the shadertext on the processor
object. Note that querying the shadertext is an inexpensive
operation, so there arent as many benefits to deferred shadertext
calls (compared to, say, the 3dlut generation). However, for those
writing display apps it's convenient to have.

-- Jeremy