Merge remote-tracking branch 'ansgar/pu/multiarchive-1' into merge

* ansgar/pu/multiarchive-1:
  Add export subcommand to export upload from policy queues.
  daklib/dbconn.py: add basename property to PoolFile
  daklib/dbconn.py: add path property to Suite
  daklib/archive.py: guess source component even with component mappings
  daklib/archive.py: implement component mappings
  Add BinaryTimestampCheck.
  daklib/config.py: add find_i method
  daklib/checks.py: add missing join
  daklib/checks.py: use apt_pkg.version_compare correctly
  daklib/checks.py: make version check slightly more verbose
  daklib/archive.py: handle unexpected names for byhand files
  daklib/archive.py: session → self.session
  daklib/checks.py: allow DMs to upload to all suites
  daklib/archive.py (install_binary): fix use of source_suites
  daklib/archive.py: use SQLAlchemy 0.6 syntax for join
  daklib/regexes.py: re_file_binary: arch names can have dashes
  daklib/regexes.py: re_field_source: fix matching version numbers
  daklib/contents.py: close db session after use
  error out if sql query fails
  use "set -o pipefail" for shell scripts

Signed-off-by: Joerg Jaspert <joerg@debian.org>