Log Message:
-----------
Insert ARST into the list of known timezone abbreviations.
Tags:
----
REL7_4_STABLE
Modified Files:
--------------
pgsql/src/backend/utils/adt:
datetime.c (r1.118.2.7 -> r1.118.2.8)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/adt/datetime.c?r1=1.118.2.7&r2=1.118.2.8)