Changed BondAngle to be the product of the energy of potentials applied to the central bond and two angles formed by four particles

This reverts commit c6c19c64, reversing
changes made to c195bf09.

Preliminary implementation of multi-gpu communication for nonbonded force calculation; energy kernel not yet implemented

Initial port to cuda11: include c++14 std, use texture objects instead of deprecated texture refs, squash warnings

Changed BondAngle to be the product of the energy of potentials applied to the central bond and two angles formed by four particles

hchou10 authored 7 years ago and cmaffeo2 committed 6 years ago

Conflicts:
	src/RandomCUDA.cu

HYC: Updated methods to use textures; Added new copyToCUDA commands; added momentum; reimplemented neighborlist calculation

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