pgsql: Update 7.x variant horology files to match the new US DST rules.

[tgl(at)postgresql(dot)org (Tom Lane)]

Log Message:
-----------
Update 7.x variant horology files to match the new US DST rules.  It seems
likely that anyone wanting to run the regression tests in the future will
have up-to-date system timezone files, so this is more likely to work than
the old contents.

Tags:
----
REL7_3_STABLE

Modified Files:
--------------
    pgsql/src/test/regress/expected:
        horology-no-DST-before-1970.out (r1.26 -> r1.26.2.1)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/test/regress/expected/horology-no-DST-before-1970.out.diff?r1=1.26&r2=1.26.2.1)
        horology-solaris-1947.out (r1.20 -> r1.20.2.1)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/test/regress/expected/horology-solaris-1947.out.diff?r1=1.20&r2=1.20.2.1)