Thread: pgsql: Comment out C++ docs for later user.

Log Message:
-----------
Comment out C++ docs for later user.  Tone down C++ compatibility in 9.0
release notes.

Modified Files:
--------------
    pgsql/doc/src/sgml:
        extend.sgml (r1.41 -> r1.42)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/extend.sgml?r1=1.41&r2=1.42)
        release-9.0.sgml (r2.22 -> r2.23)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/release-9.0.sgml?r1=2.22&r2=2.23)