Prevent import over an applied patch (closes
issue795)
run-tests.py: use --prefix instead of --home
Some SUSE version don't like --home, they fail with:
"error: must supply either home or prefix/exec-prefix -- not both"
this is due to SUSE shipping a distutils.cfg conflicting with --home.
test-permission: put sane permissions at the end of the test
If we don't do that, we won't delete all directories at the end of the test
util: handle EINVAL in _statfiles_clustered()
Raised when osutil.listdir is called on a non-directory entry.