INT-3219: Document Retry Exception Classification

JIRA: https://jira.springsource.org/browse/INT-3219

* Upgrade to Spring Retry 1.0.3
* Add a section to Reference Manual about Retry Exception Classification
INT-3223 Tail - Exclusive Attributes

JIRA: https://jira.springsource.org/browse/INT-3223

Disallow 'native-options' if any of the attributes
required for the Apache implementation are specified.