fix for #642 (deleting more than 3 rows failed on MySQL before 5.0.3)
fix for #642 (deleting more than 3 rows failed on MySQL before 5.0.3)

git-svn-id: 6eeea455dc0e2ce42bed66071b2ee3651efe9ff5@2150 eefc5464-0a4a-0410-82e6-d75a05d1654a

havocbane/sequel-pro,havocbane/sequel-pro,svn2github/Sequel-Pro,havocbane/sequel-pro,havocbane/sequel-pro,svn2github/Sequel-Pro,svn2github/Sequel-Pro,svn2github/Sequel-Pro