Run autoconf in wake of commit a692ee5870f0f442565b4c4bff367094599e9bdf.

Heikki updated configure.in but evidently forgot to include the updated
configure script in the commit.  Per buildfarm.
Update 9.4 release notes for queryid control
Properly detect read and write errors in pg_dump/dumpall, and pg_restore

Previously some I/O errors were ignored.