Change sql to use BEGIN rather than START

vmail-model.lua

@@ -203,7 +203,7 @@ local setuserparams = function(userparams)
 	if #uid == 1 then
 		-- There are a few params not to put in the voicemail_values table
 		local ignoreparam = { username=true, ["vm-password"]=true, ["vm-password-confirm"]=true }
-		vmaildb.runsqlcommand("START TRANSACTION")
+		vmaildb.runsqlcommand("BEGIN TRANSACTION")
 		sql = "DELETE FROM voicemail_values"..generatewhereclause(nil, nil, nil, uid[1].uid).." AND nid IN (SELECT nid FROM voicemail_params)"
 		vmaildb.runsqlcommand(sql, true)
 		for i,parm in ipairs(params) do