Benoit, kalziumglwidget.h/cpp grew just to big, that is why I

Benoit, kalziumglwidget.h/cpp grew just to big, that is why I
moved the code into kalziumglhelperclasses.h/cpp, onle the GLWidget
itself stays in src/kalziumglwidget.cpp.

But for some cpp-magic-reasons I needed to remove two inline-calls,
don't ask me why. Furhtermore,
template<class T> void GLVector3<T>::construct_ortho_basis_given_first_vector
is not longer found when linking, not the slightest idea why... The
other methods of GLVector are found when linking...

CCMAIL:jacob@math.jussieu.fr

svn path=/trunk/KDE/kdeedu/kalzium/src/kalziumglwidget.h; revision=555148