Merge branch 'branch-1.13.2' into maint

* branch-1.13.2:
  typofix: in comments in 't/ax/test-lib.sh'
  tests on TAP: don't run the driver with perl unconditionally
  typofix: in comments in 'automake.in'
  tests: remove obsolete (and now wrong) comment
  typofix: in diagnostic in test 't/tap-realtime.sh'
  automake: fix reference to relevant tests in comments
  NEWS: we no longer plan to drop $(INCLUDES) support in next major version

diff --cc NEWS
Simple merge

diff --cc automake.in
Simple merge

diff --cc t/ax/am-test-lib.sh
Simple merge