* New upstream release.
* Upload to experimental.
* Switch to dh sequencer in debian/rules.
* Bump ABI version from 8 to 9.
* Drop all patches from debian/patches/:
  - arm_optimization.diff
      (Appears to be no longer needed.)
  - disable-setuptools-download.diff
      (Disable ez_setup entirely, rather than disabling the downloader
      component inside ez_setup.)
  - fix-ftbfs-gcc4.7-kfreebsd.patch
      (Fixed upstream.)
  - fix-ftbfs-upstream-issue-488.patch
      (Fixed upstream.)
  - revert_upstream_issue_388_about_rpath.diff
      (Fixed upstream.)
* Use dh-autoreconf. (Closes: #725976.)
* Enable the new C++-based Python extension module shipped in 2.6.0.
  See /usr/share/doc/python-protobuf/README.Debian for details.