Upgrade to tzdata2012j.

This reflects the following changes recently circulated on the tz mailing list:

  Libya moved to CET [2012-11-11], but with DST planned [2013].
  (Thanks to Even Scharning, Steffen Thorsen, and Tim Parenti.)

I also had to change the script to cope with:

  Signatures now have the extension .asc, not .sign, as that's more
  standard.  (Thanks to Phil Pennock.)

Change-Id: Ie9711c5c796b3c122daea9690929edcc3ddd32da
2 files changed