createIndexSql() and dropIndexSql() use different index names (formatter) on MySQL and Postgres

While playing with createIndexSql() and dropIndexSql() i noticed, that the pgsql implementation differs from mysql. The index names usually are build with a '_idx' after the name. This is done through the formatter, i guess.

I noticed, that in Doctrine_Export class the createIndexSql() method does not use the formatter, while dropIndexSql() do. So creating and dropping indexes on pgsql (in my case) fails because of the different names. It does work on mysql, because Doctrine_Export_Mysql class uses it's own createIndexSql() method where the formatter is used.

Michael