6408: python3 fix

git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/trunk@21430 4ae1f11a-8b86-4847-b8af-ab372f36d1fd
6283: Re-enable optimization flag (-O) for python

git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/trunk@21433 4ae1f11a-8b86-4847-b8af-ab372f36d1fd