OPENJPA-2502: Update accessPath metas in CriteriaExpressionBuilder. Merged changes from trunk. Patch contributed by Albert Lee.

git-svn-id: https://svn.apache.org/repos/asf/openjpa/branches/2.3.x@1602059 13f79535-47bb-0310-9956-ffa450edef68
OPENJPA-2508: Account for JOIN FETCH statements when loading from the Query Cache.  Back ported to 2.3.x Rick's trunk commit.

git-svn-id: https://svn.apache.org/repos/asf/openjpa/branches/2.3.x@1602060 13f79535-47bb-0310-9956-ffa450edef68