libQGLViewer and Qt5

[PICCA Frederic-Emmanuel]

> Yes, it will be renamed. In those build only Qt5 was tested
> without renaming.

one of the revers dependencies of qglviwer force us to keep the qt4 version ?

$ apt-cache rdepends libqglviewer2
libqglviewer2
Reverse Depends:
  python-yade
  libyade
  utopia-documents
  octovis
  liboctovis1.6
  libqglviewer-dev
  science-viewing

Cheers

Frederic