Adds a PutMulti function which wraps goamz multiputs.
Adds a PutMulti function which wraps goamz multiputs.

henrylee2cn/pachyderm,sambooo/pachyderm,sambooo/pachyderm,pachyderm/pfs,pachyderm/pfs,klucar/pachyderm,alexdebrie/pachyderm,wideioltd/pachyderm,klucar/pachyderm,sambooo/pachyderm,wideioltd/pachyderm,alexdebrie/pachyderm,klucar/pachyderm,kunthar/pachyderm,phacops/pachyderm,ShengjieLuo/pachyderm,ShengjieLuo/pachyderm,pachyderm/pfs,phacops/pachyderm,kunthar/pachyderm,ShengjieLuo/pachyderm,henrylee2cn/pachyderm,alexdebrie/pachyderm