oops, should have added topgit to hydraPath

Dependencies

• [2] RJ5EREYU hydra: add bazaar to path
• [3] O25D52TA initial support for mercurial
• [4] QK2OXCKP hydra/release.nix: move manual to tarball build, restore version in store path for tarball build
• [5] T4LLYESZ * Nix expression for building Hydra.
• [6] YQWH4POV * Simplify.

Change contents

• replacement in release.nix at line 60
  [3.2094]→[2.84:158](∅→∅)
  − gzip bzip2 lzma gnutar unzip git mercurial gnused graphviz bazaar
  [3.2094]

  [3.2159]
  + gzip bzip2 lzma gnutar unzip git gitAndTools.topGit mercurial gnused graphviz bazaar