Merge branch 'master' into next

src/lua_mobjlib.c

src/lua_playerlib.c

src/lua_script.c

src/lua_script.h

src/lua_skinlib.c

src/lua_thinkerlib.c

src/m_aatree.c

src/m_aatree.h

src/m_anigif.c

src/m_anigif.h

src/m_argv.h

src/m_bbox.c

src/m_bbox.h

src/m_cheat.c

src/m_cheat.h

src/m_cond.c

src/m_cond.h

src/m_dllist.h

src/m_fixed.c

src/m_fixed.h