python/pygame: Added python3 support.

Signed-off-by: Dimitris Zlatanidis <d.zlatanidis@gmail.com>

python/pygame/README

@@ -2,3 +2,5 @@ Pygame is a set of Python modules designed for writing games. It is written
 on top of the excellent SDL library. This allows you to create fully
 featured games and multimedia programs in the python language. Pygame is
 highly portable and runs on nearly every platform and operating system.
+
+Optional dependency: python3

python/pygame/pygame.SlackBuild

@@ -82,6 +82,12 @@ python -u buildconfig/config.py
 CFLAGS="$SLKCFLAGS" \
 python setup.py install --root=$PKG
 
+# Pythonn 3 support.
+if $(python3 -c 'import sys' 2>/dev/null); then
+  CFLAGS="$SLKCFLAGS" \
+python3 setup.py install --root=$PKG
+fi
+
 find $PKG | xargs file | grep -e "executable" -e "shared object" | grep ELF \
   | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true