Add Lua helper functions vector.apply(v) math.sign(x, tolerance)
Performance of main client loop up to 2x faster In places, up to 3 times faster

NOTE 1: This does not mean a 2x increase in framerate. Increase in fps may be up to 1-2fps
NOTE 2: This local 'caching' of settings is not optimal and an alternative solution will be worked on after 0.4.11 is released
Rewrite generate notification mechanism

Add support for notify-on-decoration
Clean up mapgen constructors
Clean up mapgen.cpp code style somewhat
Remove trailing whitespace from some files
Build for win32 & win64 on Travis too
Add workaround for failing clang build
Close settings files and save them correctly
Ignore some mouse events sent from scrollbar to GUITable

Fixes #1567, #1806.
Add minetest.clear_registered_biomes() api
Schematics: Fix minetest.place_schematic() when defined by a Lua table
Mapgen V5: Fix use of uninitialized value in ctor
Fix regression (increase/decrease viewing range with +/- keys)
Restore finalColorBlend implementation in shaders.
Add space between client names in status text (client)

Before:
Server: version=0.4.10, uptime=190.5, max_lag=0.001, clients={user1,user2,user3,user4,user5,foobar,userplayedminetestthismorning}

After:
Server: version=0.4.10, uptime=190.5, max_lag=0.001, clients={user1, user2, user3, user4, user5, foobar, userplayedminetestthismorning}
Increase third person view distance

Signed-off-by: Craig Robbins <kde.psych@gmail.com>
Merge remote-tracking branch 'minetest/master' into stable

Conflicts:
	.travis.yml
	src/CMakeLists.txt
	src/camera.cpp
	src/cavegen.cpp
	src/client.cpp
	src/clientmap.cpp
	src/clientmap.h
	src/environment.cpp
	src/mapgen.cpp
	src/mapgen_v5.cpp
	src/mapgen_v6.cpp
	src/mapgen_v7.cpp
	src/mapgen_v7.h
Merge remote-tracking branch 'origin/stable' into stable
Merge remote-tracking branch 'minetest/master' into stable

Conflicts:
	src/mapgen_v5.h
	src/mg_biome.cpp
	src/mg_biome.h
Merge remote-tracking branch 'origin/stable'

Conflicts:
	src/CMakeLists.txt
	src/camera.cpp
Merge remote-tracking branch 'upstream/master' into oculus