V2.3.0 bugfix for different xpra versions, --exe and --xonly for --*image, code cleanup
V2.3.0 bugfix for different xpra versions, --exe and --xonly for --*image, code cleanup

# 12.03.2017 V2.3.0   bugfix for xpra >=v1.0 : --socket-dir now needs --bind
#                     --log and --LOG dismissed
#                     --tcp works again. Now setting "-listen tcp" for Xorg>=1.17.0
# 11.03.2017          bugfix: remove sockets within container, not afterwards. Avoids permiision error with rm on host
#                     improved archaic parsing of -- second options
# 10.03.2017          create dummy xorg.conf in "create X command", create cachefolder in "check display" again
#                     enable --exe for --*-image
#                     new option --xonly to explicitly run new X server only
#                     shrink down window manager search+config, check x-window-manager
mviereck/x11docker