Hi,

The attached patch squashes "PATCH 04" and "PATCH 05" together
and extends the build system.  It now has an install plan only installing
what's necessary (Lua code, PNG images, some configuration files ...),
a 'check' build phase verifying Minetest can actually load the mod,
and a 'minimise-png' phase minimising PNG images.

The mod name for ‘(("." "share/minetest/mods/the-mod-name"))’ can now
be determined exactly in most cases (Minetest doesn't really care but
the directory name can appear in the GUI in some cases).

Greetings,
Maxime.