Same fix as the borg 1.1 one except that borg 1.2 uses ports py-msgpack
which has more consumers than borg 1.2, hence the separate commit.
$ borg init -e none ./repo ; echo $?
Unknown integrity data version 0 in integrity.1
0
msgpack-python messed up __BYTE_ORDER handling, but only on sparc64 using
ports GCC 8.4.0; macppc base clang 13 is fine.
msgpack-python got fixed, pull the PR and bump borg 1.2.
Teste on little endian amd64/base-clang and big endian macppc/base-clang,
sparc64/ports-gcc.
OK bket
ec32988be5