ERP5Workflow: Move StateChangeInfo from DCWorkflow.Expression to ERP5Workflow.

This reduces dependency on DCWorkflow and cleanup StateChangeInfo monkey patch.
4 jobs for for_testrunner_1 in 0 seconds (queued for 1 second)
Status Job ID Name Coverage
  External
passed ERP5.CodingStyleTest-TestRunner1

00:33:40

failed ERP5.PerformanceTest-TestRunner1

00:26:47

failed ERP5.UnitTest-TestRunner1

01:11:15

failed ERP5.UnitTest-Zope2-ForTestRunner1

01:23:27