Merge branch 'public_next' into master

.travis.yml

appveyor.yml

src/Makefile

src/am_map.c

src/blua/lcode.c

src/blua/ltablib.c

src/d_netcmd.c

src/dehacked.c

src/hardware/hw_main.c

src/i_tcp.c

src/m_menu.c

src/p_mobj.c

src/p_spec.c

src/sdl/i_main.c

src/w_wad.c

src/win32/win_main.c