classes: tar 1.27 fixes

tar version 1.27 returns:

tar: --same-order option cannot be used with -c

with the commandlines we have been using. We can remove the -s option (which
is --same-order) to remove the error.

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
lib/oe/path: Fix copytree functions for tar 1.27

tar version 1.27 returns:

tar: --same-order option cannot be used with -c

with the commandlines we have been using. We can remove the -s option (which
is --same-order) to remove the error.

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>