Log Message:
-----------
Rewrite identify_system_timezone() to give it better-than-chance odds
of correctly identifying the system's daylight-savings transition rules.
This still begs the question of how to look through the zic database to
find a matching zone definition, but at least now we'll have some chance
of recognizing the match when we find it.
Modified Files:
--------------
pgsql-server/src/timezone:
pgtz.c (r1.13 -> r1.14)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/timezone/pgtz.c.diff?r1=1.13&r2=1.14)