Problem with Mauritius summer time (MUST)

Hi,

Mauritius use daylight saving since 2008-11.
The Olson database has been updated to reflect the Mauritius timezone change
at the end of 2008 (maybe since tzdata-2008f or tzdata-2008g, not really
sure).

Postgresql is supposed to have the correct Mauritius timezone since 8.3.5
(http://www.postgresql.org/docs/8.3/interactive/release-8-3-5.html).

From a debian box configured in the Mauritius timezone :
$ date
Wed Mar 4 11:10:01 MUST 2009
$ psql -c "SELECT '2009-01-01 00:56:00 MUT'::timestamp"
timestamp
---------------------
2009-01-01 00:56:00
(1 row)

$ psql -c "SELECT '2009-01-01 00:56:00 MUST'::timestamp"
ERROR: invalid input syntax for type timestamp: "2009-01-01 00:56:00 MUST"

As you can see Posgresql does not recognize the "MUST" (Mauritius Summer
Time).

For reference, here is the content of the tzdata file related to Mauritius :

# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Mauritius 1982 only - Oct 10 0:00 1:00 S
Rule Mauritius 1983 only - Mar 21 0:00 0 -
Rule Mauritius 2008 max - Oct lastSun 2:00s 1:00 S
Rule Mauritius 2009 max - Mar lastSun 2:00s 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Indian/Mauritius 3:50:00 - LMT 1907 # Port Louis
4:00 Mauritius MU%sT # Mauritius Time

Is this a bug in Posgresql or am I missing something ?
This problem was encountered with Postgresql 8.3.5 and 8.3.6.

Regards.
--
Xavier Bugaud