Fix compiling issue of MSVC
Re-fix hud_change stat argument retrieval

Conflicts:
	src/script/lua_api/l_object.cpp
Add curl, freetype and luaJIT to CMAKE_BUILD_INFO
Lower the default max_users from 100 to 15
Show git hash in version string at top left corner of window
Remove doc/gpl-2.0.txt, add doc/lgpl-2.1.txt
Add --version option
Allow to manually specify param2 in minetest.item_place() and return success
Add set_name(), set_count(), set_wear() and set_metadata() to Lua ItemStack
Pass VERSION_EXTRA to GenerateVersion.cmake
Optimized minetest.get_connected_players()

Instead of collecting all objects within a huge radius (which could be
a big value), just register each player that connects and give back the
current hold list.
Remove mapgen_air alias (#935)
FIx wrong error message on invalid use of the formspec element image_button
Add Czech language
Translated using Weblate (German)
Translated using Weblate (French)
Translated using Weblate (Dutch)
Translated using Weblate (Chinese (China))
Translated using Weblate (Portuguese (Brazil))
Translated using Weblate (Dutch)