HYC: Added Langevin particle dynamics, including momenta and kinetic energy routines; changed whitespace in some areas

Fixed bug where replicas were not receiving random forces; removed unneeded restart file writes and memcpy

  (1) PairlistDistance is properly passed on to ComputeForce objects;
  (2) Power of 2 threads are now used in particle-grid force reduction;
  (3) Fixed accidental transpose of threads and blocks in grids' particleList kernel call

Fixed bug where pairlistDistance in Confugration.cpp was not being used; problem still remains where CellDecompoisiont ignores pairlistDistance; added IMD forces

Fixed (old) invalid memory access bug in DcdWriter.h; fixed compiler warnings; small fix in Makefile's CUDA_PATH finder

Fixed bugs in initialization of Exclusions and in the calculation of forces due to angle potentials . Added coordinate file for RBs. Added normalization of orientation in RB integrator.

Implemented "particleLists" for rigid body--particle interactions; made RigidBodyType class manage its own device data for particle interactions

Added logic to angle code to avoid singularity; improved tabulated bonded kernel arguments; commented out (non-working) get_energy code

Commented out cudaSetDevice statements (these were added prematurely and should go through GPUManager)

computeTabulateBonds works, bug computing forces fixed, bondList is created, but not implemented yet.

searching for bugs, found some; appears that in integration, torque rotates the object the wrong way!