Added optional force_update argument in datalogSave function in mysql library.

interface/lib/classes/db_mysql.inc.php

@@ -308,10 +308,14 @@ class db {
 	}
 	
 	//** Updates a record and saves the changes into the datalog
-	public function datalogUpdate($tablename, $update_data, $index_field, $index_value) {
+	public function datalogUpdate($tablename, $update_data, $index_field, $index_value, $force_update = false) {
 		global $app;
 		
-		$old_rec = $this->queryOneRecord("SELECT * FROM $tablename WHERE $index_field = '$index_value'");
+		if($force_update == true) {
+			$old_rec = array();
+		} else {
+			$old_rec = $this->queryOneRecord("SELECT * FROM $tablename WHERE $index_field = '$index_value'");
+		}
 		$this->query("UPDATE $tablename SET $update_data WHERE $index_field = '$index_value'");
 		$new_rec = $this->queryOneRecord("SELECT * FROM $tablename WHERE $index_field = '$index_value'");
 		$this->datalogSave($tablename, 'UPDATE', $index_field, $index_value, $old_rec, $new_rec);