Added adaptive loadbalancing feature to IMD
New and easier set of rules to reject illegal configuration implmented
Corrected PRESSTENS calculation in imd_forces_meam.c for proper pressure relaxation using homdef.
Corrected PRESSTENS calculation in imd_forces_meam.c
Merge remote-tracking branch 'upstream/master'

Merging the CBegau into the code where Kermode potential was implemented
Merge remote-tracking branch 'upstream/master'

Merged the jomoeller changes with the code where kermode was implemented and also  merged the CBegau changes.
Merged the changes from CBegau and jomoeller