pgsql: Stamp release 7.2.6.

Log Message:
-----------
Stamp release 7.2.6.

Tags:
----
REL7_2_STABLE

Modified Files:
--------------
    pgsql:
        HISTORY (r1.153.2.10 -> r1.153.2.11)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/HISTORY.diff?r1=1.153.2.10&r2=1.153.2.11)
        configure (r1.172.2.5 -> r1.172.2.6)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/configure.diff?r1=1.172.2.5&r2=1.172.2.6)
        configure.in (r1.164.2.5 -> r1.164.2.6)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/configure.in.diff?r1=1.164.2.5&r2=1.164.2.6)
    pgsql/doc:
        bug.template (r1.20.2.5 -> r1.20.2.6)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/bug.template.diff?r1=1.20.2.5&r2=1.20.2.6)
    pgsql/doc/src/sgml:
        release.sgml (r1.115.2.9 -> r1.115.2.10)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/release.sgml.diff?r1=1.115.2.9&r2=1.115.2.10)
        version.sgml (r1.4.2.5 -> r1.4.2.6)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/version.sgml.diff?r1=1.4.2.5&r2=1.4.2.6)
    pgsql/src/include:
        pg_config.h.win32 (r1.3.2.5 -> r1.3.2.6)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/include/pg_config.h.win32.diff?r1=1.3.2.5&r2=1.3.2.6)
    pgsql/src/interfaces/libpq:
        libpq.rc (r1.8.2.5 -> r1.8.2.6)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/libpq/libpq.rc.diff?r1=1.8.2.5&r2=1.8.2.6)
    pgsql/src/interfaces/libpq++:
        libpq++dll.rc (r1.2.2.4 -> r1.2.2.5)

(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/libpq++/libpq++dll.rc.diff?r1=1.2.2.4&r2=1.2.2.5)