I modified build_visit so that fortran support for third party libraries
is disabled by defualt. The user can enable it with "--fortran" on the
command line or selecting the appropriate option in the graphical version.
This resolves #901.



git-svn-id: http://visit.ilight.com/svn/visit/trunk/src@16831 18c085ea-50e0-402c-830e-de6fd14e8384