reg file corruption on going.
Started with first phase. ijnect a fault in reg file.

- later inject verification code.
- need to verify further
Fault injection in register file is verified.
Finish to cleanup code a little bit
Disable test feature.
Now ready to use.
disable test in sharder.cc

- start debug
Bug fixed - # of component in fault_injection.h
Apply the reg file fault injection
Merge remote-tracking branch 'origin/fault_injection' into
fault_injection

Conflicts:
	src/gpgpu-sim/fault_injection.h
	src/gpgpu-sim/gpu-sim.cc
	src/gpgpu-sim/shader.cc