BoP update

Merged items from https://github.com/John-Smith-Modded/JSTR-1.6.x/pull/11

Added amber ore, amber block, amber item; poison bucket; biome book background; barley item;
Buildcraft update

Fuel liquid, integration table, missing emzuli and diamond pipe added

BC6.x compatibility update:

Architect sides and filler textures
Natura v2.2.0a3

Merge from 1.6 branch (including recent changes)