More Blocks 2.2.0

Changelog

Changed

• Refactored recipe override mechanism to avoid re-coding recipes
  when we only want to change the amount produced.
• Realigned rail recipe to the changes made in Minetest Game.
  • All rail recipes (standard, power, break) were boosted by 50%.

Fixed

• Shapeless crafting recipes are now handled in redefinitions.
• Aliases are now resolved in Stairs+ circular saw cost calculation.
• Fixed strange placement behavior for non-default Stairs+ nodes.
• Fixed stairs placement over oddly-shaped nodes.