pantheon-files-pkexec does not accept arguments

[quassy]

This makes it impossible to e.g. pass a directory to open to a root Pantheon Files via terminal.

The file /usr/bin/pantheon-files-pkexec should be changed to the following, so that all arguments get passed along to pantheon-files (the last five characters were added to the original file):

#!/bin/sh
pkexec "/usr/bin/pantheon-files" "$@"