Merge branch 'next' into public_next

appveyor.yml

src/d_clisrv.c

src/doomdef.h

src/g_game.c

src/g_game.h

src/hardware/hw_main.c

src/hardware/r_opengl/r_opengl.c

src/p_floor.c

src/p_mobj.c

src/p_spec.c

src/p_user.c

src/r_bsp.c

src/sdl/ogl_sdl.c