resizable ft2demos

[Alexei Podtelezhnikov]

Hi all,

I've just made ft2demos resizable under Xlib and GDI. It works quite
well under X with dynamic repainting during resizing. I was not able
to achieve this under GDI: the window only repaints once the resizing
is finished. I would appreciate if somebody more fluent in GDI took a
look.

https://git.savannah.gnu.org/cgit/freetype/freetype2-demos.git/commit/?id=95117bcfd06b44331296ff74ea9bae0e3bb3a2ac

Thank you
Alexei