t/020_create_sql_remove.t: Make pipe writes unbuffered.
Fix typo in pg-common.postinst comment
* Replace the static logrotate configuration by generating the file
  dynamically using ucf, triggered by watching /usr/sbin/logrotate.
  This eases dist-upgrades that upgrade logrotate to >= 3.8 from an older
  version (squeeze->wheezy, precise->trusty).
* postgresql-common.postinst: Stop debconf later so ucf can use it.
postgresql-common.postinst: Call su without - to avoid a warning.
t/003_package_checks.t: Add test case for logrotate.
testsuite, pg_virtualenv: Don't fail if ifconfig is not installed. We
don't require it as a dependency, and this breaks e. g. autopkgtests in
minimal environments.
pg_buildext: Document the loop action (present since version 141).
pg_buildext: Add "installcheck" action for use with autopkgtest.
t/150_tsearch_stemming.t: Add tests for stemming/searching with non-ASCII
characters. (See #689997)
debian/postgresql-common.triggers: Also trigger on
/usr/share/postgresql/, so that installation of new server versions builds
the corresponding dictionaries.
Install /usr/share/postgresql-common/pgdg/apt.postgresql.org.sh to enable
activating the apt.postgresql.org repository.
postgresql-server-dev-all: Add "make" to depends because pg_buildext is mostly useless without it; extensions using autopkgtest would otherwise need to include it in their debian/tests/control files.
pgxs_debian_control.mk: Add "clean: debian/control" and ".PHONY: clean".
Extend the USAGE section and include autopkgtest examples
Fix typos: pgxs_debian_control.mk: Add "clean: debian/control" and ".PHONY: debian/control".
pg_createcluster, t/001_packages.t: Refactor the ssl cert test, and add
matching testcases in the testsuite.
t/150_tsearch_stemming.t: Use a non-ASCII word that works with both Debian's and Ubuntu's hunspell-en-us
pg_virtualenv: Fix exit code shown with -s.
pg_createcluster, pg_virtualenv: -o will set postgresql.conf parameters.
pg_virtualenv: Use bash arrays to properly pass -o values with spaces

(Unfortunately we need to disable set -u for that)