added priority to USTask, USTaskThread; renamed USTask publication callback to clarify intent
decided to go with 'CompletionDelegate' instead of 'PublicationDelegate' in USTask
broke USTaskThread into USTaskThread and USTaskSubscriber; updated MOAISim to use new model
added missing USTaskSubscriber.cpp and .h
moved all thread classes to moaicore, renamed from US* to MOAI*
merged MOAIData into MOAIDataBuffer
factored MOAITasksQueue out of MOAITaskThread; merged MOAIDataIOAction with MOAIDataIOTask; updated MOAIDataIOTask to use new model
added support for default texture; finished async load; samples for async texture load and default texture
added support in MOAIDataBuffer to detect zip files, inflate on load; added inflate on load support to MOAIDataIOTask
exposed inflate on load flags from MOAIDataBuffer
fixed inflate on load behavior in MOAIDataIOTask
Adding file not found log if a texture file fails to load
Merge remote-tracking branch 'upstream/master'