Some patches submitted by Hunter Matthews
Some patches submitted by Hunter Matthews

adds --help as a commandline option.
fixes issues with modulerc file getting sourced twice in sh and tcsh shells.

Kent

abrodkin/modules,abrodkin/modules,wtsi-hgi/modules,abrodkin/modules,wtsi-hgi/modules,wtsi-hgi/modules,wtsi-hgi/modules,abrodkin/modules