I modified build_visit to not echo error messages from the "which"
command when it was used to determine the location of gfortran. This
was confusing since that code is always executed even when the user
is not asking for fortran support. This resolves #940.



git-svn-id: http://visit.ilight.com/svn/visit/trunk/src@17182 18c085ea-50e0-402c-830e-de6fd14e8384