-Add Simon Detheridge's name to the About Box.
--Bug fixes
-Fix bug in OpenCL atomic string, which is never used.
-Wrong hist and accum allocation size in RendererCL when using float-only buffers now.
-Move some kernel initialization to a place where it's done once per render, rather than on every interactive iter chunk.
--Code changes
-Make ConvertCarToRas() just assign to the member rather than return a struct.
-Make kernel string accessor functions in IterOpenCLKernelCreator, FinalAccumOpenCLKernelCreator and DEOpenCLKernelCreator be const and return a const string reference.
-Don't include atomic string unless locking on the GPU, which is never.