pgsql: Revoke augmentation of WAL records for btree delete, per

Log Message:
-----------
Revoke augmentation of WAL records for btree delete, per discussion.

Modified Files:
--------------
    pgsql/doc/src/sgml:
        config.sgml (r1.247 -> r1.248)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/config.sgml?r1=1.247&r2=1.248)
    pgsql/src/backend/access/nbtree:
        nbtpage.c (r1.116 -> r1.117)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/access/nbtree/nbtpage.c?r1=1.116&r2=1.117)
    pgsql/src/backend/access/transam:
        xlog.c (r1.365 -> r1.366)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/access/transam/xlog.c?r1=1.365&r2=1.366)
    pgsql/src/backend/utils/misc:
        guc.c (r1.537 -> r1.538)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/misc/guc.c?r1=1.537&r2=1.538)
        postgresql.conf.sample (r1.275 -> r1.276)

(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/misc/postgresql.conf.sample?r1=1.275&r2=1.276)
    pgsql/src/include/access:
        xlog.h (r1.100 -> r1.101)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/include/access/xlog.h?r1=1.100&r2=1.101)