pgsql: Stamp release 7.4.16.

Log Message:
-----------
Stamp release 7.4.16.

Security: CVE-2007-0555, CVE-2007-0556

Tags:
----
REL7_4_STABLE

Modified Files:
--------------
    pgsql:
        configure (r1.310.2.26 -> r1.310.2.27)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/configure.diff?r1=1.310.2.26&r2=1.310.2.27)
        configure.in (r1.301.2.23 -> r1.301.2.24)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/configure.in.diff?r1=1.301.2.23&r2=1.301.2.24)
    pgsql/doc:
        bug.template (r1.21.6.18 -> r1.21.6.19)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/bug.template.diff?r1=1.21.6.18&r2=1.21.6.19)
    pgsql/src/include:
        pg_config.h.win32 (r1.11.4.16 -> r1.11.4.17)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/include/pg_config.h.win32.diff?r1=1.11.4.16&r2=1.11.4.17)
    pgsql/src/interfaces/libpq:
        libpq.rc (r1.10.4.15 -> r1.10.4.16)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/libpq/libpq.rc.diff?r1=1.10.4.15&r2=1.10.4.16)