enable pre, mid, and post parma balancing
vtx, edge, elm balancer tuning
Merge branch 'master' of github.com:SCOREC/core
add user data to analytic model
Merge branch 'master' of https://github.com/SCOREC/core
element balancer
Merge branch 'master' of github.com:SCOREC/core
allow input of isotropic APF field to MeshAdapt
get rid of duplicate code in balancers

the old parma::Balancer becomes parma::Stepper and all balancers(vtx,edge,elm,ghost,etc...) are derived from the new parma::Balancer
restructing
silencing a cdash compile warning
Merge branch 'master' into new_stk