ptobs for Guile 2.2+

[Thien-Thi Nguyen]

I'm trying to upgrade Guile-PG for Guile 2.2 (and possibly 3.0).
It currently uses ptobs for the large object ("lobj") support in
libpq, mostly for buffering and buffer synchronization.  I see
in libguile/ports.h (Guile 2.0.13), however:

 /* Hey you!  Yes you, reading the header file!  We're going to
    deprecate scm_ptobs in 2.2, so please don't write any new
    code that uses it.  Thanks.  */

So, what do people do for "old" code that currently uses ptobs
(i.e., for Guile 2.0 and earlier)?  Is there a recommended
migration path (besides "give up" :-D)?  What am i missing?

-- 
Thien-Thi Nguyen -----------------------------------------------
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