Dynamic sky, fog and cloud colors; sun and moon

share/client/textures/sunrisebg.png

...e/server/games/mesetint/mods/default/textures/skybox1.png

...ver/games/mesetint/mods/default/textures/skybox1_dawn.png

...er/games/mesetint/mods/default/textures/skybox1_night.png

...e/server/games/mesetint/mods/default/textures/skybox2.png

...ver/games/mesetint/mods/default/textures/skybox2_dawn.png

...er/games/mesetint/mods/default/textures/skybox2_night.png

...e/server/games/mesetint/mods/default/textures/skybox3.png

...ver/games/mesetint/mods/default/textures/skybox3_dawn.png

...er/games/mesetint/mods/default/textures/skybox3_night.png

src/CMakeLists.txt

src/camera.cpp

src/client.cpp

src/client.h

src/clientmap.cpp

src/clientmap.h

src/clientserver.h

src/clouds.cpp

src/clouds.h

src/daynightratio.h