minetest/minetest — pull request #554 by 0gb-us (2013-03-20 19:58:22+00:00)
Title: Don't lose items that are buildable_to

Nodes that are buildable_to will be droped, not replaced, when other nodes are placed in them.

This update doesn't effect things such as water, lava, and air, as they drop nothing when dug.