implemented host-side loopcheck functionality, next commit will be in-kernel

Conflicts:

	oclkernels/interpolate.cl
	oclptxhandler.cc
	oclptxhandler.h
Looopcheck fully implemented, functional, produces reasonable looking output, has not been put through convergence testing

Conflicts:

	oclkernels/interpolate.cl
	oclptxhandler.cc
Reviewed All of Afshin's code. Cleaned up. Compile/ran.
Add particle fifo ability to samplemanager

Conflicts:

	samplemanager.cc
	samplemanager.h
Fix compile errors and segfaults, and add NULL support in handler.