first tentative commit for bonded interactions on the GPU.
forgot to add this to last commit.
added SIMT-type dopair/doself loops.
forgot to add this in last commit.
Fixed some issues in angle.c and dihedral.c without vectorization
Replaced tabs
merge improvements from jac to apoa1.
several changes, better output.
new task-based parallel bonds, several fixes to potentials.
tweak tolerance.