HHH-4531 Derby dialect should not support comments

git-svn-id: https://svn.jboss.org/repos/hibernate/core/branches/Branch_3_3@18330 1b8cb986-b30d-0410-93ca-fae66ebed9b2

core/src/main/java/org/hibernate/dialect/DerbyDialect.java

@@ -90,6 +90,10 @@ public class DerbyDialect extends DB2Dialect {
 		return false;
 	}
 
+	public boolean supportsCommentOn() {
+		return false;
+	}
+
 	public String getQuerySequencesString() {
 	   return null ;
 	}