Copy from:

    https://github.com/minetest/minetest_game/blob/master/mods/
        give_initial_stuff/init.lua

Signed-off-by: Xiong Changnian <xiong@cpan.org>
Clean up code, downsize goodies.

Signed-off-by: Xiong Changnian <xiong@cpan.org>
Merge branch 'feature-initial-stuff' into devel

* Clean up give_initial_stuff.

Signed-off-by: Xiong Changnian <xiong@cpan.org>