Diirt 2014-07 release integration

2014-07 integration include:

* epics-util 0.3.2 - http://util.diirt.org/changes-report.html#a0.3.2
* graphene 0.8.0 - http://graphene.diirt.org/changes-report.html#a0.8.0
* pvmanager 2.7.0 - http://pvmanager.diirt.org/changes-report.html#a2.7.0