CRM-14398 fix campaign in exports
CRM-14398 supplementary fix campaign in exports
CRM-15163 - CRM_Utils_Check_Security - Windows support

On Windows-PHP setups, paths may have a mix of back-slashes and
forward-slashes.  For this security check, we'll normalize to
forward-slashses to simplify the path manipulation.
CRM-15196 mysql 5.6 is too strict on altering columns which have fks
Merge pull request #3975 from totten/4.4-win-check

CRM-15163 - CRM_Utils_Check_Security - Windows support
Merge pull request #3979 from eileenmcnaughton/CRM-15196

CRM-15196 mysql 5.6 is too strict on altering columns which have fks
CRM-14398 ... export issues
Merge pull request #3883 from eileenmcnaughton/CRM-14398

CRM-14398 fix campaign in exports