Wrong parsing on HAVING clause

With Doctrine::ATTR_QUOTE_IDENTIFIER enabled, when you launch a query with a complex having clause, Doctrine_Query_Having class does not handle it correctly.

By example, when you track the having clause interpretation:

$query->addHaving( 'SUM( IF( s.id = ? , 1 , 0 ) ) = 0' , 7 );

At some point, Doctrine_Query_Having at line 70 return something like "`s10`.`id = ?`" instead of "`s10`.`id` = ?".

I just fix it using:

return $this->query->parseClause($func);

instead of:

return $this->_parseAliases($func);

Now, the parseAliases function is not used anymore...

See patch attached...

Loops