NEI Compatibility (#1)

added one or two additional methods to return the item blocks that would
drop when the block is destroyed, so the NEI and other similar mods can
read the item names properly.
Double chest returned when broken
1. fixed a bug that would return an oak chest as well as the original
chest when broken.
Double door returned when breaking top door panel
Merge pull request #708 from Bletch1971/NEI-Compatibility

Nei compatibility