Fix getting back a wrong relpath
Fix getting back a wrong relpath

If a device is mounted at more than one mount points, the relpath
may be created with unexpected result because there is no compare
before doing it.

Resolvs #34

Signed-off-by: Lans Zhang <e5f62b0189adf41bef2a4f4e0947feed14b85bc6@windriver.com>
Signed-off-by: Peter Jones <2e0a021e603479ff81838c00c3b770daca4e0214@redhat.com>

rhinstaller/efivar,rhboot/efivar,rhinstaller/efivar,vathpela/efivar-devel,rhboot/efivar