passed in env_data->ns to interpolator, hard coded # directions to 1 in oclenv
Removed handling of global pdf addition and file dumping from oclptxhandler and moved into oclenv

Conflicts:

	oclenv.cc
	oclptxhandler.cc
Fixed minor errors. This compiles now.
Add dual direction capability

Conflicts:
	oclkernels/interpolate.cl
	samplemanager.cc

Conflicts:

	oclkernels/interpolate.cl
Added dual direction support. Need to fix path dumping such that the same thread ID is not assigned to different particles in the file. Compiles, runs.
Fixed plotter to deal with continual addition of particles to thread count
struct allocation fix. Please use double braces jeff, just annoying warnings! {{ stuff, stuff}}
Fix sloppy pointer arithmetic, was causing obscure CL errors
Remove iostream junk
Get summing kernel running.  Output not verified, but no crash.
remove extraneous backslash
Modify some comments, remove some usused members
Add break codes for easier reading/debugging
Clear unnecessary loop reversal
Add special init only done setting
Add core files to gitignore