Docs shouldn't say HOT Standby.
Not an acronym.

Jeff Janes
Also fix rotation of csvlog on Windows.

Backpatch to 9.2, like the previous fix.
pg_upgrade:  report failed cluster name

When pg_upgrade can't find required pg_controldata information, report
_which_ cluster is failing, with this message:

	The %s cluster lacks some required control information:
Fix rare missing cancellations in Hot Standby.
The machinery around XLOG_HEAP2_CLEANUP_INFO failed
to correctly pass through the necessary information
on latestRemovedXid, avoiding cancellations in some
infrequent concurrent update/cleanup scenarios.

Backpatchable fix to 9.0

Detailed bug report and fix by Noah Misch,
backpatchable version by me.
Make output identical to pg_resetxlog's
Don't require oldestMultixact if server doesn't have it