Masterserver totals fix
Move new core devs to the "Core Developpers" section of mainmenu.
Raise the maximum node limit to 0x7fff

As agreed to by kahrl
Made unknown nodes stop falling nodes properly and shorten lines
Add a callback: minetest.register_on_craft(itemstack, player,
old_craft_grid, craft_inv) and
minetest.register_craft_predict(itemstack, player, old_craft_grid,
craft_inv)
Fixed ignoring of "diggable" property of nodes.
Don't remove background of games in submenus
Add more checks to vector functions
Add my email address to the main menu credits
Move the sapling growing and grass adding/removing ABMs to Lua
Fix grass adding/removing ABM.
Fix liquid_range
* Prevent graphical glitches on old servers
* Fix flowing of liquids with viscosity != 1 and range != 8
* Fix range = 0, no flowing nodes will appear
Fix possible crash with grass ABM.
Portability fixes for OpenBSD (and possibly NetBSD and others).
Add basic protection support to builtin
Merge remote-tracking branch 'upstream/master' into masterserver
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