Merge commit 'stew/content_generation' into merge

* commit 'stew/content_generation': (35 commits)
  spalling fix, get rid of extra import in utils.py
  allow contents files to be written to an alternate location
  another fix to bootstrap, and get rid of 'fetchall'
  get bootstrap working again
  stop setting the db connection to latin1
  insert files, not dirs
  cant delete it after i set it to null, dummy
  use get_suite_architectures from dbconn.py instead of database.py
  fix misspelling cleanup() -> _cleanup()
  forgot to update config, get rid of incorrect warning
  stupid bad merge syntax error
  better cleanup of temporary files, consolidate some repeated code
  adding back our schema migration as update6
  update header - we always ship compressed contents files
  temp_content_associations -> pending_content_associations
  typo fix
  some spelling changes
  oops, forgot some changes to contents.py
  missing ; in dak.conf
  undoing incorrect changes in dak.conf
  ...

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