2720 is not checked in.
I attached new patch for 2414 to jira so please have a look at it.
Another two issues are waiting for a review:
variable declaration with history support: https://jira.jboss.org/browse/JBPM-2506
documentation and examples for variable declaration https://jira.jboss.org/browse/JBPM-2776
I got some feedback from HuiSheng (rather positive) and I think I am quite done with them as well.