Support of FORMAT binary (bytea problem)

[Krysztophe]

• Big bytea fields (> a few 100MBs) cannot be exported (famous old limitation)
• pg_dumpbinary uses COPY ... TO ... (FORMAT binary) but has very few features.
• Is it possible that pg_back covers this case? A parameter may contain tables to be dumped with FORMAT binary. I suppose that coherence may be a problem (or use --snapshot ?) And it would need a separate restore script.