pgsql: Stamp HEAD as 9.1devel.

Log Message:
-----------
Stamp HEAD as 9.1devel.
(And there was much rejoicing.)

Modified Files:
--------------
    pgsql:
        configure (r1.684 -> r1.685)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/configure?r1=1.684&r2=1.685)
        configure.in (r1.632 -> r1.633)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/configure.in?r1=1.632&r2=1.633)
    pgsql/doc:
        bug.template (r1.63 -> r1.64)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/bug.template?r1=1.63&r2=1.64)
    pgsql/src/include:
        pg_config.h.win32 (r1.73 -> r1.74)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/include/pg_config.h.win32?r1=1.73&r2=1.74)
    pgsql/src/interfaces/libpq:
        libpq.rc.in (r1.12 -> r1.13)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/libpq/libpq.rc.in?r1=1.12&r2=1.13)
    pgsql/src/port:
        win32ver.rc (r1.15 -> r1.16)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/port/win32ver.rc?r1=1.15&r2=1.16)
    pgsql/src/tools:
        version_stamp.pl (r1.6 -> r1.7)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/tools/version_stamp.pl?r1=1.6&r2=1.7)