pgsql: Remove all mentions of EnterpriseDB Advanced Server from

Log Message:
-----------
Remove all mentions of EnterpriseDB Advanced Server from pg_upgrade;
EDB must maintain their own patch set for this.

Modified Files:
--------------
    pgsql/contrib/pg_upgrade:
        check.c (r1.3 -> r1.4)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/contrib/pg_upgrade/check.c?r1=1.3&r2=1.4)
        controldata.c (r1.1 -> r1.2)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/contrib/pg_upgrade/controldata.c?r1=1.1&r2=1.2)
        exec.c (r1.2 -> r1.3)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/contrib/pg_upgrade/exec.c?r1=1.2&r2=1.3)
        file.c (r1.3 -> r1.4)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/contrib/pg_upgrade/file.c?r1=1.3&r2=1.4)
        info.c (r1.2 -> r1.3)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/contrib/pg_upgrade/info.c?r1=1.2&r2=1.3)
        pg_upgrade.c (r1.1 -> r1.2)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/contrib/pg_upgrade/pg_upgrade.c?r1=1.1&r2=1.2)
        pg_upgrade.h (r1.3 -> r1.4)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/contrib/pg_upgrade/pg_upgrade.h?r1=1.3&r2=1.4)
        relfilenode.c (r1.2 -> r1.3)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/contrib/pg_upgrade/relfilenode.c?r1=1.2&r2=1.3)
    pgsql/doc/src/sgml:
        pgupgrade.sgml (r1.3 -> r1.4)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/pgupgrade.sgml?r1=1.3&r2=1.4)