THE SINGLE BEST STRATEGY TO USE FOR ROCHUS-KELLER

An Assessment with Valgrind unveiled that the most costly functions are mutex locking/unlocking, malloc/totally free and QImage dealing with. So I did some optimizations regarding QImage. In dedicate 1f976e5b5ee3cfe40921c74b97edb8d84ff39dd3 I reorganized the Smalltalk bitmap to QImage conversion which resulted in testStandardTests jogging time of 1