Fixed bugs and improved code in redis driver. Added new unit tests and functional tests for redis driver.
Aded tests for redis exception on connection
Fixed PMD problems in build.xml and fixed problems detected by PMD in code
Updated redis config options in README
Modified memcache driver to support persistent connections and improved code
Fixed tests to adapt them to new changes
Checkstyle fixes
Increased version, 1 for redis and 1 for memcache. Fixed README adding explanation of new feature of memcache