Merge branch 'maint'

* maint:
  configure: remove an obsolete TODO comment
  post-release: micro version bump (1.13.3a)
  release: stable micro release 1.13.3
  typofix: fix grammaro in comments in t/tags-pr12372.sh
  NEWS: minor fixlets, re-wording, and better text wrapping
  tests: slightly stricter checks in t/cxx-demo.sh
  tests: fix spurious failure when 'etags' program is Exuberant Ctags
  tests: fix spurious failure due to missing sleeps
  maint: version bump after beta release 1.13b
  release: beta release 1.13b (will become 1.14)
  maint: support new Automake versioning scheme in tagging/uploading rules
  announcement: can be generated from development snapshots as well
  announcement: can be generated from development snapshots as well
  announcement: be less strict in the paring of NEWS
  maint: version bump after beta release 1.13.2b
  release: beta release 1.13.2b (will become 1.13.3)
  sync: update config.guess from upstream
  automake: assume we can always pass '-o' to the C compiler
  NEWS: document recent testsuite fixes (MinGW/MSYS related)
  depcomp: avoid trailing backslash in depfile for depmode=msvc7
  tests: prune some weed in a non-POSIX test
  tests: avoid a spurious failure on MSYS
  t/README: document "run_make", discourage "make -e"
  cosmetics: tiny whitespace fixlets
  tests: avoid a spurious failure with MSVC
  tests: avoid a spurious failure on non-POSIX systems

Signed-off-by: Stefano Lattarini <stefano.lattarini@gmail.com>

diff --cc NEWS
Simple merge

diff --cc bin/automake.in
index 07a63c20fde452e5afd4010336922472422d2c38,40b31814bdfa2c810e77a4860725b07137aa191d..e78c00577e6d462362f1af269d234e9e274a0ab4
--- 1/bin/automake.in
--- 2/bin/automake.in
+++ b/bin/automake.in
@@@ -7745,7 -7889,7 +7745,7 @@@ sub print_autodist_file
  
    my @four;
    format USAGE_FORMAT =
--  @<<<<<<<<<<<<<<<<   @<<<<<<<<<<<<<<<<   @<<<<<<<<<<<<<<<<   @<<<<<<<<<<<<<<<<
++ <<<<<<<<<<<<<<<<   @<<<<<<<<<<<<<<<<   @<<<<<<<<<<<<<<<<   @<<<<<<<<<<<<<<<<
    $four[0],           $four[1],           $four[2],           $four[3]
  .
    local $~ = "USAGE_FORMAT";

diff --cc configure.ac
Simple merge

diff --cc lib/depcomp
Simple merge