New option to draw checked menu items with only a check mark instead

of a checkbox or radiobutton. This kind of rendering is the default
on platforms like MS Windows and Mac OS X and is also used by Qt's
Fusion style as well as in the QtCurve GTk2 style.
The check mark (tick) is rendered with a font glyph at the same point
size as the menu item text and should thus always be scaled correctly.
The option can be de/activated on the Popup menus configuration page
in the "Configure QtCurve" KDE control module ("Check marks only").
It is stored as "onlyTicksInMenu" in the .qtcurve theme files.
The option is on by default on OS X, off by default elsewhere.

BUG: 363895
REVIEW: 128097
Committed from host : Portia.local