use the *last* opened kml file to be painted by the marblegeodataplugin again. Fix regression.
use the *last* opened kml file to be painted by the marblegeodataplugin again. Fix regression.

svn path=/trunk/KDE/kdeedu/marble/; revision=906205

quannt24/marble,utkuaydin/marble,utkuaydin/marble,rku/marble,utkuaydin/marble,quannt24/marble,probonopd/marble,rku/marble,Earthwings/marble,adraghici/marble,oberluz/marble,quannt24/marble,tucnak/marble,utkuaydin/marble,tzapzoor/marble,oberluz/marble,utkuaydin/marble,tucnak/marble,tzapzoor/marble,Earthwings/marble,Earthwings/marble,oberluz/marble,rku/marble,probonopd/marble,tucnak/marble,adraghici/marble,David-Gil/marble-dev,quannt24/marble,quannt24/marble,tucnak/marble,AndreiDuma/marble,adraghici/marble,rku/marble,AndreiDuma/marble,AndreiDuma/marble,Earthwings/marble,David-Gil/marble-dev,tzapzoor/marble,adraghici/marble,tzapzoor/marble,David-Gil/marble-dev,utkuaydin/marble,oberluz/marble,oberluz/marble,probonopd/marble,David-Gil/marble-dev,AndreiDuma/marble,quannt24/marble,oberluz/marble,David-Gil/marble-dev,quannt24/marble,AndreiDuma/marble,probonopd/marble,tzapzoor/marble,adraghici/marble,rku/marble,David-Gil/marble-dev,tzapzoor/marble,tucnak/marble,AndreiDuma/marble,rku/marble,probonopd/marble,probonopd/marble,tucnak/marble,Earthwings/marble,tzapzoor/marble,adraghici/marble,tucnak/marble,probonopd/marble,Earthwings/marble,tzapzoor/marble