Add a debug message when all plugins were unloaded to help track down crashes which depend on the order of destruction.
Add a debug message when all plugins were unloaded to help track down crashes which depend on the order of destruction.

svn path=/trunk/KDE/kdeedu/marble/; revision=1196433

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