dot/screenrc: Add a binding for the `kill' command.

[profile] / bin / xpra-start-xdummy

#! /bin/sh -e

dpy=${1?display}; shift
exec xpra --xvfb="Xorg -dpi 75 -noreset -nolisten tcp \
        +extension GLX +extension RANDR +extension RENDER \
        -config xpra-xorg.conf \
        -logfile $HOME/.xpra/xserver-$dpy.log" \
        "$@" start :$dpy