add fill type use to templates (overrides other leveling settings if >
0), add override to world-gen config (filltype=), add use of fillType to
instant builder.  update both fortress and logcabin to use filltype=4
(around/beneath)
adjust topID selection for fill-around to include checking above placed
block for air to determine if it should use top block or filler block. 
adjust filler block-id to use fillerID from biome-gen rather than
hard-coded stone.
adjust obsidian vault to use filltype=4
Merge branch 'master' of https://github.com/shadowmage45/AncientWarfare.git