`pcre' package has been rebased to 7.8 version. It brings following behavior changes:

* UTF-8 checking is now as per RFC 3629 instead of RFC 2279; this is more
  restrictive in the strings it accepts.
  E.g., UTF-8 character ordinal value is limited to 0x0010FFFF value now:

  $ echo -ne "\x00\x11\xff\xff" | recode UCS-4-BE..UTF8 | pcregrep --utf-8 '.'
  pcregrep: pcre_exec() error -10 while matching this line:

  See <http://tools.ietf.org/html/rfc3629#section-12> for more details.

* Saved patterns that were compiled by earlier versions of PCRE must be
  recompiled.

  This affects applications that serialize precompiled PCRE expressions to
  external memory (e.g. a file) and load them later (for performance reasons
  usually, like large spam filters).