pgsql: Remove, already in back branches: < < o Add new version of

Log Message:
-----------
Remove, already in back branches:

<
<     o Add new version of PQescapeString() that doesn't double backslashes
<       that are part of a client-only multibyte sequence
<
<       Single-quote is not a valid byte in any supported client-only
<       encoding.  This requires using mblen() to determine if the
<       backslash is inside or outside a multi-byte sequence.
<
<     o Add new version of PQescapeString() that doesn't double
<       backslashes when standard_conforming_strings is true and
<       non-E strings are used

Modified Files:
--------------
    pgsql/doc:
        TODO (r1.1866 -> r1.1867)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/TODO.diff?r1=1.1866&r2=1.1867)
    pgsql/doc/src/FAQ:
        TODO.html (r1.369 -> r1.370)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/FAQ/TODO.html.diff?r1=1.369&r2=1.370)