pgsql: Stamp release 7.4.7.

Log Message:
-----------
Stamp release 7.4.7.

Tags:
----
REL7_4_STABLE

Modified Files:
--------------
    pgsql:
        configure (r1.310.2.14 -> r1.310.2.15)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/configure.diff?r1=1.310.2.14&r2=1.310.2.15)
        configure.in (r1.301.2.12 -> r1.301.2.13)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/configure.in.diff?r1=1.301.2.12&r2=1.301.2.13)
    pgsql/doc:
        bug.template (r1.21.6.7 -> r1.21.6.8)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/bug.template.diff?r1=1.21.6.7&r2=1.21.6.8)
    pgsql/doc/src/sgml:
        release.sgml (r1.235.2.28 -> r1.235.2.29)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/release.sgml.diff?r1=1.235.2.28&r2=1.235.2.29)
    pgsql/src/include:
        pg_config.h.win32 (r1.11.4.7 -> r1.11.4.8)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/include/pg_config.h.win32.diff?r1=1.11.4.7&r2=1.11.4.8)
    pgsql/src/interfaces/libpq:
        libpq.rc (r1.10.4.6 -> r1.10.4.7)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/libpq/libpq.rc.diff?r1=1.10.4.6&r2=1.10.4.7)