src/gd update
Merge commit 'refs/top-bases/t/svr/env' into t/svr/env
Merge branch 't/support/game' into refs/top-bases/t/svr/room
Merge branch 't/svr/env' into refs/top-bases/t/svr/room
Merge commit 'refs/top-bases/t/svr/room' into t/svr/room