Use internal cache var to set whether or not hdf4/jpeg libnames have special prefix/suffix.

git-svn-id: svn+ssh://portal-auth.nersc.gov/project/projectdirs/visit/svn/visit/trunk/src@23078 18c085ea-50e0-402c-830e-de6fd14e8384
Adding new classes that support GetFieldName for RemoteVis work
Merge branch 'Remote-VisIt'

git-svn-id: svn+ssh://portal-auth.nersc.gov/project/projectdirs/visit/svn/visit/trunk/src@23079 18c085ea-50e0-402c-830e-de6fd14e8384