Moved gravel ore gen to generate after underground vanilla ores, but before any other biome decoration. Result is that gravel ore is now more integrated with terrain gen, covered with snow, etc.
Added Forestry Backpack stuff

Stone Torches can now be placed in a Builder's Backpack.
Knapsack bugfixes
Merge pull request #33 from ScottKillen/BetterGravelOreSpawn

Move gravel ore spawn earlier in biome decoration
Merge pull request #35 from Spyboticsguy/master

Stone Torches, yay!