Seeing {closure} in the logs as caller is not helpful
Also add some missing caller name, which avoids Database::query as
caller in the logs
Change-Id: I3cab186cd63b295d1e4d1ca5232bc81925a85eb0
MediaWiki doesn't support PostgreSQL < 9.2, so drop the support for
older versions.
At the same time, since we're messing with the DatabasePostgres::insert()
code anyway, let's start using ON CONFLICT DO NOTHING for PG >= 9.5.
And since we're doing that, let's do the same for
DatabasePostgres::nativeInsertSelect().
Change-Id: I7bf13c3272917ebafeaff11eb116714a099afdf3
