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Random guest name and finite liquid checkbox
Merge pull request #563 from proller/guest

Random guest name and finite liquid checkbox
6d facedir
Set of changes to build mineTest using Visual Studio 11.0. These affect
the following:
1. String concatenation in guiMainMenu.cpp - it is required for all
individual strings to be of the same type <unicode/non-unicode>; adding
explicit L qualifier before the other strings.
2. Correcting type of BlockMakeData to struct in place of class forward
declarations. This information is used for name decoration by Visual
Studio, leading to linker errors in case of mismatches.
3. Windows headers define max as a macro somewhere, leading to a compile
time error in profiler.h; using () around function to prevent macro match
from occurring.
Include backface_culling flag in serialization format for TileDefs

This way flowing liquids actually show the backface when specified to
do so. Without this, TileDefs where by default initialized with
backface_culling = true and never set otherwise.

For backwards compatibility, an old client connected to a new server,
or a new client connected to an old server will behave like before
i.e., backface_culling is always true.
Move rightclickable to the proper place
Allow spawning particles from the server, from lua

Spawn single particles or make use of ParticleSpawner for many randomly spawned particles.
Accessible in Lua using minetest.spawn_particle and minetest.add_particlespawner.
Increase Protocol Version to 17.

Conflicts:
	src/clientserver.h
Mapgen indev: float islands, larger far biomes
Add Ore infrastructure and l_register_ore()
Update lua_api.txt
Fix indentation of lua_api.txt
Add more error checking to l_register_ore
Use minetest.register_ore() in minimal
Ensure ore can fit in OreSheet::generate()