entire desktop. map port + 5500 in reverse connect. Add id_cmd remote
control functions for id (and other) windows. Allow zero port in SSL
reverse connections. Adjust delays between multiple reverse connections;
X11VNC_REVERSE_SLEEP_MAX env var. Add some missing mutex locks; add
INPUT_LOCK and threads_drop_input. More safety in -threads mode for
new framebuffer change. Fix some stderr leaking in -inetd mode.
runge