Log Message:
Update from version 1.11nb1 to 1.12.

Upstream changes:

1.12 Mon Oct 13 14:11:01 CEST 2008
	- use the yencode filesize as additional matching criterium
          to avoid false matches.
        - made the example decoder more verbose w.r.t. error handling.
        - removed potentially confusing decide_temp calls from
          example decoder.