Merge pull request #1 from IBMStreams/master

Update from original
Fixed issue #58
Reworked the retry code.
Consistent region items.
1. JMSSink can participate in consistent region but can not be at start
of a consistent region.
2. JMSSource can NOT participate in consistent region at moment.
Updated SPLDoc with consistent region support information for JMS
operators
Merge pull request #67 from conglisc/master

Fix for #58 + Consistent Region support for JMS