Merge branch 'maint'

* maint:
  news: document new 'subdir-objects' warning
  PLANS: one minor fixlet (mostly cosmetic)
  PLANS: we have already dropped support for split info files in master
  NEWS: fix a reference to Automake 1.14 where Automake 2.0 was intended
  PLANS: fix reference to non-existent 'next' branch
  PLANS: fix botched version reference
  maintcheck: fix two references to old location of aclocal and automake
  dist: deprecated shar and tar+compress formats

diff --cc NEWS
Simple merge

diff --cc doc/automake.texi
Simple merge

diff --cc maintainer/syntax-checks.mk
Simple merge

diff --cc t/list-of-tests.mk
Simple merge