This commit has some drawbacks:
- It's rather hacky. The Quake II menu is crap and was never intended
to be scaled. My approach was to add scaling to most of the generic
functions and handle all the special cases in the non generic parts
of the menu. A better solution would require to rewrite at least
parts of the menu. And like it's said in qmenu.c: I won't do that.
- Some menu elements are aligned to the right, others to the left. In
many places magic numbers are used to align elements by hand. This
makes it very hard to impossible to implement a scaling logic which
works in all situations. With this approach most menus look good up
to at least a scaling factor of 3. Especially the "Player Setup"
menu is very problematic at small disalignements are unavoidable.
Please note, that only the menu system itself is scaled. Some elements
like the the "Quit Screen" or the loading plaque are still missing. They
will be done in a later commit.
