8371: Merged V2.1 to V2.2
8307: Next round of fixes for session management.
8309: Fixed AR-1891: Long MLText strings fail in Oracle
8313: Fix for case where existing MLText entry is null
8319: Follow-up fix for NPE where StringValue is null when persisting
8331: Fix for AR-1696: Long text in an aspect property causes an exception
git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@8496 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
6944: More hibernate session cache taming.
6945: Times for commits are close to linear in the number of items submitted.
6946: Missing break statement. (Courtesy of Jan).
6948: Fixed session cache eviction problem triggered by resetLayer().
6956: Wrapped AVMService and AttributeService in TransactionResourceInterceptor.
Reverted log4j.properties
git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@7368 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
