* merged from the debian-sid branch, most notably:

* merged from the debian-sid branch, most notably:
  - Correct fi translation for hash sum mismatches (LP: #420403)
  - remove 'old' InRelease file if we can't get a new one before
    proceeding with Release.gpg to avoid the false impression of a still
    trusted repository by a (still present) old InRelease file.
    Thanks to Simon Ruderich for reporting this issue! (CVE-2012-0214)
* apt-pkg/acquire-item.cc:
  - remove 'old' InRelease file if we can't get a new one before
    proceeding with Release.gpg to avoid the false impression of a still
    trusted repository by a (still present) old InRelease file.
    Thanks to Simon Ruderich for reporting this issue! (CVE-2012-0214)
* French: replace "étiquetage" by "épinglage" for "pinning"