fixes grails-7729
Foreign Key constraints should be created when tablePerHierarchy=false
http://jira.grails.org/browse/GRAILS-7729
remove obsolete note from javadoc.

The note was obsoleted by https://github.com/grails/grails-data-mapping/commit/4540ded5cf99a3c045b9f9310021261c389de2a7 since its copied binding errors remain flagged as binding errors.
GRAILS-11177 make it possible to set singleSession=false for Grails OSIV Interceptor
Revert "GRAILS-11133 assign Connection of current session to session created in withNewSession"

This reverts commit 5a6a999c854e83c721c2cab467becd0ea12bbdec.

- The connection of the previous Hibernate session might not belong to the current transaction.
- Let the TransactionAwareDataSourceProxy return the connection for the new Hibernate session instead.
update hibernate4 version to 4.3.4.Final version
update ehcache optional dependency to 2.4.8 version in hibernate plugins
update hibernate-validator to 5.0.3.Final version
GRAILS-11177 GRAILS-10063 Disable making Hibernate session, queries and criterias read-only when current transaction is read-only
- add new configuration option "grails.hibernate.pass.readonly" for enabling previous behaviour
update version to 3.0.2 release
fix for GRAILS-11193 "Grails Rest Client Builder Plugin fails with MethodNotSupported exception for blank constructor."
Merge pull request #11 from jdbeutel/master

remove obsolete note from javadoc.
Merge pull request #10 from domurtag/master

fixes grails-7729
applied fix for GRAILS-7729 to hibernate 4
upgrade / cleanup dependencies. Fix for GPMONGODB-353 with update to spring-data-mongodb
fix for GPMONGODB-341 "Allow MongoDB to use a connection string"
fix for GPMONGODB-355 "Dynamic finders that return a single result always execute a mongo count command"
fix for GPMONGODB-356 "Optimistic Locking Flow"
test for GPMONGODB-342 and GPMONGODB-343
fix for GPMONGODB-334 "CLONE - Modifications of Lists, Maps and Embedded are not saved when it is the only change in the object"
fix for GPMONGODB-241 "Order in criteria queries with paging has no effect"