Direct space Lennard-Jones 6 contributions.

git-svn-id: https://svn.ices.utexas.edu/repos/clsb/trunk/moil@5003 90e2fc84-bd37-0410-82f1-ae2f889bfac2
PME6 working.

git-svn-id: https://svn.ices.utexas.edu/repos/clsb/trunk/moil@5004 90e2fc84-bd37-0410-82f1-ae2f889bfac2
add reference to umbrella calculations

git-svn-id: https://svn.ices.utexas.edu/repos/clsb/trunk/moil@5005 90e2fc84-bd37-0410-82f1-ae2f889bfac2
bug fixed

git-svn-id: https://svn.ices.utexas.edu/repos/clsb/trunk/moil@5009 90e2fc84-bd37-0410-82f1-ae2f889bfac2
making sure that flags novd and noel are correctlty handled in these subroutines

git-svn-id: https://svn.ices.utexas.edu/repos/clsb/trunk/moil@5010 90e2fc84-bd37-0410-82f1-ae2f889bfac2
making sure that flags novd and noel are correctlty handled in these subroutines

git-svn-id: https://svn.ices.utexas.edu/repos/clsb/trunk/moil@5011 90e2fc84-bd37-0410-82f1-ae2f889bfac2
removed dneffective

git-svn-id: https://svn.ices.utexas.edu/repos/clsb/trunk/moil@5013 90e2fc84-bd37-0410-82f1-ae2f889bfac2
Merge branch 'master' of github.com:jmbr/moil