Terrain/furniture additons

[chaosvolt]

Self-PR'd it partly to get some feedback, but also because was bouncing back and forth between laptop and desktop.

• Added an idea I saw an interesting video on, the use of a pair of bottles as a makeshift still, insulated by sand (possibly soil). For this, I've set it to be built on a dirt mound or sand mound. I would've made it let you built anywhere using soil or sand, but the logic for soil production and usage isn't quite fixed in stone just yet, so doing it this way lets me avoid having to change the math later.
• Also added a recipe for making clean water from salt water. Unlikely to be highly useful given access to fresh water isn't as major a concern anymore, but potentially handy. Only reason you don't get any salt as a by-product is because by-products only let you specify full stacks of items with charges. Given the choice between forcing the player to boil it in batches vs. simply not getting a paltry 10 salt each...
• Added a constructable pulley lifter, constructed indoors to basically hang a block and tackle for lightweight lifting duty.
• Added wooden windbreaks, again based off ideas I've seen elsewhere. Works as a crude barricade, or (as the name suggests) to block wind. We don't really have a way to screen against wind only when the player's actually sitting down in a shelter, but the idea should be reasonably clear.
• Added leather tarp lean-tos, as a compliment to the basic tarp lean-to in normal More Survival Tools. Likely a bit more accessible innawoods as well.