Test of the GPU pattern recognition
New version for GPU computing
Use a cache to speed up the link step
Correct Cuda synchronization problem
Correct the linking cache
Correct a synchronization problem for the last event
Some documentation
Correction of the timeout system
Merge branch 'gpu'

Conflicts:
	Makefile
	src/AMSimulation.cc
	src/CMSPatternLayer.cc
	src/CMSPatternLayer.h
	src/PatternFinder.cc
	src/PatternFinder.h
	src/PatternTrunk.h
	src/Sector.cc
	src/SectorTree.h
	src/gpu.cu
	src/gpu.h
	src/gpu_struct.h