Merge r25276 - r25278 from trunk

Brings in Zend_Service_Twitter changes



git-svn-id: http://framework.zend.com/svn/framework/standard/branches/release-1.12@25279 44c647ce-9c0f-0410-b52a-842ac1e357ba
Updated to r25280

Brought in updates to Twitter documentation



git-svn-id: http://framework.zend.com/svn/framework/standard/branches/release-1.12@25281 44c647ce-9c0f-0410-b52a-842ac1e357ba