Review: update config file loading


Jeremy Selan <jeremy...@...>
 

Commit:
http://github.com/jeremyselan/OpenColorIO/commit/05354bc1aad4325eca4cdbef64b4edaade8f16dc

$OCIO, ociocheck, and other programs that end up calling
Config::CreateFromFile(...), can now specify relative path locations.

-- Jeremy