Fix file mode, remove executable bit.
Fix file mode, remove executable bit.

Fix file permission mode which was improperly set to 0755.  Also some
minor tweakings to the comments in code.

Change-Id: I6ca2aefeab6710cdc83c3273843cb555065078e9

steveb/heat,rh-s/heat,noironetworks/heat,jasondunsmore/heat,miguelgrinberg/heat,rdo-management/heat,cwolferh/heat-scratch,srznew/heat,redhat-openstack/heat,dims/heat,rh-s/heat,srznew/heat,dragorosson/heat,openstack/heat,openstack/heat,cwolferh/heat-scratch,pshchelo/heat,pshchelo/heat,dims/heat,pratikmallya/heat,pratikmallya/heat,dragorosson/heat,takeshineshiro/heat,jasondunsmore/heat,maestro-hybrid-cloud/heat,takeshineshiro/heat,steveb/heat,maestro-hybrid-cloud/heat,cryptickp/heat,gonzolino/heat,noironetworks/heat,miguelgrinberg/heat,rdo-management/heat,cryptickp/heat,redhat-openstack/heat,gonzolino/heat