decoration that allows notably to:
- resize window borders,
- change buttons size,
- hide the horizontal separator.
- select different title bar blending and frame border size depending on
the window title or name, in order to have better integration of GTK
based windows in the decoration style.
- add a size-grip handle in the bottom-right corner of windows. This is
particularly useful when the no-border option is selected.
WWW: http://www.kde-look.org/content/show.php/Nitrogen?content=99551
Approved by: miwi (mentor)
