Doctrine_Export_Mysql does not quote tableName in createIndexSql()

Very simple issue, seems that has been forgotten in this case. One of us in the developer team had the great idea to name a table "group". So we need quoting And adding a index on this table within a migration was not possible because the table name doesn't get quoted when adding an index..

So I added the tiny patch necessary to correct this.. I know it's not impressing but it's a fix Maybe it gets in the maintenance release 1.1.5 before the 2.0 stable comes out (if there is anything more in the 1.1.* line)..