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>
Fix f6 debug/profiler display

After fonts were re-engineered the height of the f6 debug/profiler display would only display about 2-3 lines of text.
Make directional fog colors respect tonemap
Disable loading .mtl files. Theyre not used anyway.
Add flags and lacunarity as new noise parameters

Add 'absolute value' option to noise map functions
Extend persistence modulation to 3D noise
Extend 'eased' option to noise2d_perlin* functions
Some noise.cpp formatting fixups
Always escape user provided data in mainmenu fields
Fix lighting artifacts (Issue #1887).
Fix struct vs. class in forward declarations
Optimize noise implementations
Fix compiler warning (signed vs. unsigned)
Biomes: Make biome heat and humidity noise parameters user-configurable
Noise: Update Noise::resizeNoiseBuf to account for lacunarity not equal to 2