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

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_4_STABLE

Modified Files:
--------------
    pgsql/src/test/regress/expected:
        horology-no-DST-before-1970.out (r1.36 -> r1.36.2.1)

(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/test/regress/expected/horology-no-DST-before-1970.out.diff?r1=1.36&r2=1.36.2.1)
        horology-solaris-1947.out (r1.30 -> r1.30.2.1)

(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/test/regress/expected/horology-solaris-1947.out.diff?r1=1.30&r2=1.30.2.1)