Merge branch 'udmf-plane-linedefs' into udmf-scrollers

appveyor.yml

extras/conf/SRB2-22.cfg

src/CMakeLists.txt

src/Makefile

src/Makefile.d/detect.mk

src/Makefile.d/old.mk

src/Makefile.d/platform.mk

src/Makefile.d/util.mk

src/am_map.c

src/b_bot.c

src/b_bot.h

src/blua/lbaselib.c

src/command.c

src/console.c

src/d_clisrv.c

src/d_clisrv.h

src/d_event.h

src/d_main.c

src/d_netcmd.c

src/d_netcmd.h