- only increase the score of installed applications if they

  - only increase the score of installed applications if they
    are not obsolete
  - fix resolver bug on removal triggered by weak-dependencies
    with or-groups
* methods/http.cc:
  - send apt version in User-Agent
* apt-pkg/deb/debrecords.cc:
  - fix SHA1Hash() return value
* apt-pkg/cdrom.cc:
  - only unmount if APT::CDROM::NoMount is false
* methods/cdrom.cc:
  - only umount if it was mounted by the method before
* po/gl.po:
  - fix error translation that causes trouble to lsb_release
* apt-pkg/acquire-item.cc:
  - if decompression of a index fails, delete the index
* apt-pkg/acquire.{cc,h}:
  - deal better with duplicated sources.list entries (avoid
    double queuing of  URLs) - this fixes hangs in bzip/gzip
* apt-pkg/policy.cc:
  - allow multiple packages (thanks to David Foerster)
* merged from Christian Perrier:
	* mr.po: New Marathi translation  Closes: #416806