CRM-13066, move data from civicrm_cache to civicrm_batch table

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* CRM-13066: 'Clean up Caches' deletes in progress batches
  http://issues.civicrm.org/jira/browse/CRM-13066
CRM-13066, minor cleanup

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* CRM-13066: 'Clean up Caches' deletes in progress batches
  http://issues.civicrm.org/jira/browse/CRM-13066
Merge pull request #1545 from kurund/CRM-13066

CRM-13066, move data from civicrm_cache to civicrm_batch during upgrade