pgsql: Update pg_dump to support dumping operator families.

Log Message:
-----------
Update pg_dump to support dumping operator families.

Modified Files:
--------------
    pgsql/src/bin/pg_dump:
        common.c (r1.95 -> r1.96)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/bin/pg_dump/common.c.diff?r1=1.95&r2=1.96)
        pg_backup_archiver.c (r1.138 -> r1.139)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/bin/pg_dump/pg_backup_archiver.c.diff?r1=1.138&r2=1.139)
        pg_dump.c (r1.457 -> r1.458)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/bin/pg_dump/pg_dump.c.diff?r1=1.457&r2=1.458)
        pg_dump.h (r1.131 -> r1.132)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/bin/pg_dump/pg_dump.h.diff?r1=1.131&r2=1.132)
        pg_dump_sort.c (r1.16 -> r1.17)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/bin/pg_dump/pg_dump_sort.c.diff?r1=1.16&r2=1.17)