grafx2: new package

GrafX2 is a bitmap paint program inspired by the Amiga programs Deluxe Paint and Brilliance. Specialized in 256-color drawing.
grafx2: Some simplification in the package file.
Edit that was left out from the last commit.
tintin: add expression
g500-control: Add myself as maintainer

Signed-off-by: Moritz Ulrich <moritz@tarn-vedra.de>
Chicken: Fix build on OS X.

Signed-off-by: Moritz Ulrich <moritz@tarn-vedra.de>
elixir: Update to 11.2.

Signed-off-by: Moritz Ulrich <moritz@tarn-vedra.de>
Merge pull request #1262 from Zoomulator/add_grafx2

grafx2: new package
Merge pull request #1298 from lovek323/tintin

tintin: add expression