Carlos Garnacho authored Jun 22, 2019 and Tanu Kaskinen committed Aug 27, 2019

Reading properties from the X11 root window is meant to provide 1:1 results
with reading the configuration directly in the local case. This configuration
is essentially different only in remote cases.

Add an extra check for the SSH_CONNECTION envvar, so we don't even need
opening a X11 display connection for IPC in the most usual case.