lib/oe/path: try hardlinking instead of guessing when it might fail
The comparison of the stat st_dev is not enough to judge whether
hardlinking will work. One example would be where you try and hardlink
across two bind-mounts of a directory. The st_dev will be the same and
the operation will still fail.
Instead of implementing a check to try and figure out hardlink support
just try hardlinking and fall back to a copy when running into an
exception.
Signed-off-by: Henning Schild <henning.schild@siemens.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
