Declare constructor which accepts one argument explicit.
Declare constructor which accepts one argument explicit.

svn path=/trunk/KDE/kdeedu/marble/; revision=1082467

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