127393 rmunteanu: Merged 5.1.N (5.1.2) to 5.2.N (5.2.1)
127370 rmunteanu: Merged 5.1.1 (5.1.1) to 5.1.N (5.1.2)
127309 aleahu: MNT-14332 : Alfresco stops working when Type Hierarchy creates a circular reference
- added validation to check if circular dependency was introduced when a new namespace is imported
git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@127885 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261