Extended documentation
Removed non-working save to JPEG class
Fixed correct DMA for output texture
Added work in progress files for saving image to file (not working)
Added work in progress files for threading render calls
Minor refactoring
Added TimeMeasurer class for measuring elapsed time
Added power usage test spreadsheet
Generalized the thread class
Extracted GLES context creation into separate class
Added new files to make file
Added threaded upload of video texture and separated processing and RGBA packing into two passes
Adapted use of new QuadRenderer
Minor changes
Merge tag 'android-4.4.4_r1'

Conflicts:
	VideoProcessors/GLESProcessor.cpp
	VideoProcessors/GrayScalerProcessor.cpp