Bukkit/CraftBukkit — pull request #858 by THDigi (2012-08-15 00:00:15+00:00)
Title: Added support for data values on furnace recipes - BUKKIT-1657

Furnace recipes only used the ingredient ID, these changes allow it to use a specific data value or the -1 data value wildcard as well.

Related report: https://bukkit.atlassian.net/browse/BUKKIT-1657