fix linker error about Quaternion
fix linker error about Quaternion

svn path=/trunk/KDE/kdeedu/marble/; revision=778210

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