Added infrastructure for region-constrained fluctuating charges.
MERGE OpenMD development 1783:1878 into trunk
MERGE OpenMD development branch 1465:1781 into trunk
Added Fluctuating Charge Langevin propagator, and made it the default fixed some errors on the one-center slater coulomb integrals, and some parameters in PhysicalConstants.
Reorganized source directories, added RNEMD and flucQ blocks for options parsing.
This form allows you to request diffs between any two revisions of this file. For each of the two "sides" of the diff, enter a numeric revision.