Re: COPY FREEZE and setting PD_ALL_VISIBLE/visibility map bits

Hi,

I've pushed the fix, after a a couple extra rounds of careful testing.

I noticed that the existing pg_visibility regression tests don't check 
if we freeze the TOAST rows too (failing to do that was one of the 
symptoms). It'd be good to add that, because that would fail even 
without CLOBBER_CACHE_ALWAYS, so attached is a test I propose to add.

regards

-- 
Tomas Vondra
EnterpriseDB: http://www.enterprisedb.com
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