fixes mulitple entry record comparison by order canonicalization

On rr's that have more than one entry, for example MX records, the
order they are in the zone file may not match the order they are in
the the AWS pull of the record.  This leads to needless deletes and
adds when doing an import --replace.
Merge branch 'c14n-rr'
Merge branch 'hashtables'
Merge branch 'hashtables'

Conflicts:
	scripts/cli53