Log Message:
Changes 8.2.13:
* Prevent error recursion crashes when encoding conversion fails.
* Disallow "CREATE CONVERSION" with the wrong encodings for the
  specified conversion function.
* Fix core dump when to_char() is given format codes that are
  inappropriate for the type of the data argument.
* Fix possible failure in "contrib/tsearch2" when C locale is used
  with a multi-byte encoding.
* Fix extreme inefficiency in "contrib/tsearch2" parser's handling of
  an email-like string containing multiple @ characters.
* Fix decompilation of CASE WHEN with an implicit coercion.
* Fix possible misassignment of the owner of a TOAST table's rowtype.
* Fix PL/pgSQL to not treat INTO after "INSERT" as an INTO-variables
  clause anywhere in the string, not only at the start; in
  particular, don't fail for "INSERT INTO" within "CREATE RULE".
* Clean up PL/pgSQL error status variables fully at block exit.
* Retry failed calls to CallNamedPipe() on Windows.
* Add MUST (Mauritius Island Summer Time) to the default list of
  known timezone abbreviations.