Raise file conflicts on differing permissions (user, group, mode)
- Two files (or directories) cannot be correctly shared if their
permissions differ, even if the content is identical: either
file will end up having wrong permissions, depending on installation
order. This means a package can among other things silently
eg relax permissions of eg security sensitive directory (accidentally
or intentionallY).
- We now require exact match of user, group and entire file mode
(previously only the file type part of mode was tested)