pgsql: Update timezone FAQ item:

USA saving time changes are

Log Message:
-----------
Update timezone FAQ item:

    <P>USA saving time changes are included in PostgreSQL release 8.0.[4+],
    and all later major releases, e.g. 8.1.  Canada and Western Australia
    changes are included in 8.0.[10+], 8.1.[6+], and all later major
    releases.  PostgreSQL releases prior to 8.0 use the operating system's
    timezone database for daylight saving information.</P>

Modified Files:
--------------
    pgsql/doc:
        FAQ (r1.409 -> r1.410)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/FAQ.diff?r1=1.409&r2=1.410)
    pgsql/doc/src/FAQ:
        FAQ.html (r1.365 -> r1.366)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/FAQ/FAQ.html.diff?r1=1.365&r2=1.366)