fix jsr 107 tck issue 13: introduce tests for new Expiry Policy.
Additionally, wrote tests to match up with jsr 107 spec table for when ExpiryPolicy methods should be called on cache operations.

Require RI patch request to fix RI issue 27 before these test will pass. (failures in calls to getValue() from cache EntryProcessor invoke.

Fixed several missing @Overrides in entry processors.
Merge pull request #38 from jfialli/updateExpiryPolicyTest

fix jsr 107 tck issue 13: introduce tests for new Expiry Policy.