M    ZSI/generate/containers.py
M    ZSI/generate/containers.py

refinement of yesterdays changes to improve modelGroup support, 
also added a bailout in case ModelGroup refs/defintions are recursive.



git-svn-id: c4afb4e777bcbfe9afa898413b708b5abcd43877@1154 7150bf37-e60d-0410-b93f-83e91ef0e581

acigna/pywez,acigna/pywez,acigna/pywez