Serialization support in order to use hazelcast as distributed cache.
Minor log improvements
remove duplicate unnecessary list of variable instances
rearrange test spring context files
ACT-2112 JtaTransactionInterceptor hides exception

It is possible that JtaTransactionInterceptor swallows original
exceptions, when an exception is thrown on rollback.
ACT-2112 JtaTransactionInterceptor hides exception

When exception occurs on rollback, the original causing exception is lost.
FIX: log.error the original exception upon throwing the new one.
create jobTestHelper and move job related files to it to be usable in junit 4 style tests
Merge remote-tracking branch 'origin/seperateJobHelperMethods' into reArrangeContextAndTests
reorganize camel tests
reorganize camel tests
organize camel tests
revert back the junit 4 jobTestHelper. it is in another pull request
Add a time property to the Attachment entity and corresponding column on ACT_HI_ATTACHMENT
fix http://jira.codehaus.org/browse/ACT-2123, add sequence label
change tab to space
replace deprecated method
Regarding the issue ACT-1936, org.activiti.engine.task.TaskInfoQuery#processCategoryIn and org.activiti.engine.task.TaskInfoQuery#processCategoryNotIn methods added. With respect to those changes, 4 new test methods added to org.activiti.engine.test.api.task.TaskQueryTest class.
Added support for compensation event definitions by using 'org/activiti/icons/compensate-throw.png' and 'org/activiti/icons/compensate.png'
Register rollback listener before executing the job
Fix for ACT-2145 : defaultRenderer should htmlEncode values in order to
protect js error if & char is present in expression.