Last Commitfest patches waiting review

We are down to 13 patch in Needs Review state. Many of these are
stragglers that no-one's really even looked at yet.

If we want to finish the commitfest, we'll soon have to decide what to
do to patches that no-one cares enough about to review them.

pg_receivexlog: addition of --create/--drop to create/drop repslots
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Magnus has promised to review this, but hasn't had the time for weeks.
Does anyone else want to pick this up? I'm OK to wait for Magnus to
handle this - I expect it to be a quick review and commit - but we
should not hold up the commitfest for this.

Grouping Sets
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There has been a lot of discussion, but no decisions. See
http://www.postgresql.org/message-id/87vbodhtvb.fsf@news-spur.riddles.org.uk.

Would a committer be interested to take responsibility of this? If not,
this will just linger indefinitely.

Sort support for text with strxfrm() poor man's keys
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Peter: Are you waiting for Robert to review this? Robert, could you
review the latest patch, please? Peter: Could you try to get rid of the
extra SortSupport object that Robert didn't like?
(http://www.postgresql.org/message-id/CA+TgmobDe+YDFnHTS0GWpT54-er8BPT3vx8rPshD+98CTDo25g@mail.gmail.com)
I think it would speed up the process if you did that, instead of
waiting for Robert to find the time.

Compression of Full Page Writes
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This has been a ridiculously long thread, with diversions into different
compression and CRC algorithms. Given that, the latest patch is
surprisingly small. I don't think this is going to get any better with
further discussion, and the patch looks OK at a quick glance, so I've
now marked this as "Ready for Committer".

hash join - dynamic bucket count
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Kevin: Could you review the latest patch, please?

INNER JOIN removals
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The latest patch is significantly different from what was originally
submitted for the commitfest, so I wouldn't feel bad just bumping this
to the next one. I'll do that unless someone picks this up soon.

Tom: I know you're busy with the more urgent jsonb patch.. Do you think
you would find the time to review this anytime soon? Anyone else?

event triggers: more DROP info
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Adam: Are you planning to do more review on this? Alvaro: do you feel
comfortable proceeding with the review you got so far?

Selectivity estimation for inet operators
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I think there's a bug in the estimation of semi-joins, see
http://www.postgresql.org/message-id/5423DC8D.3080206@vmware.com. But I
think we could split this patch into two, and commit the non-join
selectivity estimator first, as that seems OK. If no-one else steps up
to the plate, I can do that..

add latency limit to pgbench throttling (--rate)
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Rukh: Are you planning to review the latest patch version?

Escaping from blocked send() by pg_terminate_backend().
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I've had a look, but I'd like to have a second opinion on this.

Fix local_preload_libraries to work as expected.
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Peter: Could you move this forward, please?

pg_dump refactor to remove global variables
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Peter: Can you review the latest patch, please?

Fix xpath() to return namespace definitions (fixes the issue with nested
or repeated xpath())
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No-one's volunteered to review this. I don't understand XML enough to
review this, and Abhijit who was earlier signed up as reviewer said the
same thing.

Peter: Could you take a look at this too? You've dabbled into XML stuff
before..

- Heikki