Merge branch SRB2:next into server-check-files-progress

appveyor.yml

src/console.c

src/g_game.c

src/lua_baselib.c

src/lua_hook.h

src/lua_hooklib.c

src/lua_inputlib.c

src/lua_libs.h

src/netcode/client_connection.c

src/netcode/d_clisrv.c

src/netcode/d_net.c

src/netcode/d_netfil.c

src/netcode/i_net.h

src/netcode/i_tcp.c

src/netcode/net_command.c

src/netcode/server_connection.c

src/netcode/tic_command.c

src/p_mobj.c

src/p_saveg.c

src/sdl/i_main.c