NEW changes in stable-new

[Debian FTP Masters]

Processing changes file: groonga_6.1.5-1+deb9u1_amd64.changes
  ACCEPT
Processing changes file: groonga_6.1.5-1+deb9u1_ppc64el.changes
  ACCEPT
Processing changes file: groonga_6.1.5-1+deb9u1_s390x.changes
  ACCEPT