Added support for ri:areaLight parameter to IECoreRI::RenderImplementation::light
Fixed bug when loading CoordinateSystems in Houdini.

It had been trying to access the local transform, which may or may not exist.
Merge pull request #96 from danieldresser/addAreaLightRi

Added support for ri:areaLight parameter to IECoreRI
Merge pull request #98 from andrewkaufman/coordBug

Fixed bug when loading CoordinateSystems in Houdini
Updating Changes/SConstruct for 8.0.0a17
Fixed a segfault which occurs when selecting multiple components of a sceneShape in Maya.
Fixed a segfault with IECoreMaya/ProceduralHolderComponentBoundIterator.cpp
Merge pull request #99 from goddardl/MayaSegfaultFix

Maya SceneCache segfault fix.