celeron55/minetest_game — pull request #80 by VanessaE (2012-12-25 00:11:06+00:00)
Title: Tweaked Mese so that the new Mese Blocks appear where default:mese was before.

E.g. in stone where it had already been spawned in maps prior to this change,
in structures made with the old block, etc.

Mese ore (of a sort), as default:stone_with_mese, is generated now instead of
default:mese (which is not generated at all now).

The new default:mese_block is substituted in place of default:mese by way of an
alias.

Crystals still come from Mese Crystals in Stone, while digging buried Mese
Blocks returns exactly those (the same as can be crafted from 9 crystals). If
necessary, they can be split up into Mese Crystals again via the existing
crafting recipe.

This alters the value of the various Mese items a little, but avoids breaking
old structures that were made of mese.

The original default:mese, if needed, can be obtained by crafting one Mese
Crystal with one cooked stone. Yields 1.