In order to fulfill the intended purpose, one must redirect to /dev/null
before redirecting stderr. Otherwise stderr just goes to the console on
stdout...
It should already be installed, but makechrootpkg might non-conformantly
not have it installed leading to broken system probing. Short-circuit
the check entirely.
Also clean up some autotools path args that were already the default.
upstream release
Restore hostid handling erroneously removed long ago by archzfs -- not
enforcing its use by default is reasonable, ignoring it when it is
present and explicitly desired by the user, is not reasonable.
