CRM-13554

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* CRM-13554: Improve string validation in the query engine
  http://issues.civicrm.org/jira/browse/CRM-13554
Merge branch '4.3' of git://github.com/civicrm/civicrm-core into CRM-13554
Merge pull request #1803 from dlobo/CRM-13554

CRM-13554 - Fix typos in mass conversion