Merge branch 'maint' into micro

Merge branch 'maint' into micro

* maint:
  release: stable minor release 1.14
  NEWS: one more minor fixlet
  maint: port check-minimal-autoconf to VPATH builds
  tests: avoid spurious failures in Linux -> MinGW cross-compilation mode
  tests: simplify checks for some expected variables values in Makefiles
  NEWS: improve and update wording
  tests: fix/improve few heading comments
  coverage: new test on Texinfo @include support
  tests: tighten a grepping check
  tests: more significant names for some tests
  rename-tests: rework some code for clarity and safety
  tests: cosmetic changes in t/extra-sources.sh
  rename-tests: inform the user about the pre-filled commit msg
  typofix: in comments in 'maintainer/rename-tests'
  rename-tests: also "git add" list-of-tests.mk
  tests: rename t/exsource.sh -> t/extra-sources.sh
  tests: some improvements to Gettext tests
  maint: version bump after beta release 1.13b
  release: beta release 1.13b (will become 1.14)
  automake: assume we can always pass '-o' to the C compiler
  NEWS: fix typo
  NEWS: on assuming "rm -f" without arguments work
  docs: AM_PROG_CC_C_O: correct imprecise statements about it
  NEWS: document deprecation of 'shar' and 'compress' dist formats
  m4: rename minuso.m4 -> prog-cc-c-o.m4
  tests: some tests make no sense if "$CC -c -o" doesn't work
  AM_PROG_CC_C_O: don't rely on AC_PROG_CC_C_O, re-implement similar logic
  compile: rewrite AC_PROG_CC with AM_PROG_CC_C_O contents
  tests: avoid few lingering $MAKE redirections
  tests: fix a spurious failure on NetBSD 5.1
  texi: build version.texi and stamp-vti in srcdir
  tests: fix a botched heading comment
  tests: fix another spurious with FreeBSD make
  tests: fix a spurious failure with FreeBSD make
  tests: remove remaining exec bits ('maint' branch)
  PLANS: subdir-objects: various updates
  THANKS: update Akim's e-mail address
  tests: less uses of "make -e"; avoid spurious failures in 'check-cc-no-c-o'
  build: be more respectful of user-specified verbosity
  check-cc-no-c-o: unify initializations in a single place
  check-cc-no-c-o: avoid a spurious failure
  build: fixup for building in a VPATH setup
  Use AC_DEFUN_ONCE to define AM_PROG_CC_C_O
  compile: avoid AC_PROG_CC messy rewrite
  options: tiny simplification in dealing with incompatible versions
  options: try to report as much errors as possible
  refactor: fix few "inverted boolean" usages
  options: better name for an internal function
  options: more consistency in use of return statuses to report errors
  options: tiny simplification in dealing with erroneous opts
  options: consistently use return statuses to report errors
  options: re-enable some sanity checks
  THANKS: update Eric Blake's e-mail address
  NEWS: typofix
  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
  am: prefer a shorter idiom where possible
  maint: re-run "make update-copyright" ...
  tests: avoid spurious failure with older flex (2.5.4)
  build: move automake and aclocal in 'bin' subdir
  build: break up monolithic Makefile.am in subdir-specific fragments
  maint branch: we are going to become Automake 1.14
  tests: typofixes in comments in t/preproc-c-compile.sh
  tests: remove bashism from a test
  tests: rename some with more descriptive names
  typofix: in comments in t/extra2.sh
  tests: fix botched cross-reference in a heading comment
  automake: refactoring: factor out common cpp-like flags
  NEWS (mint): reflect new Automake versioning scheme
  maintcheck: avoid spurious failure
  perl: perl subroutine prototypes are problematic, don't use them
  maint: more adjustments to the new versioning scheme
  cosmetics: fix some "docstring-like" comments in automake
  style: call perl functions 'like_this()', not '&like_this()'
  preproc: enhance and extend tests
  preproc: add support for relative names in included fragments
  maint: use more perl subroutines prototypes in the automake script
  build: auto-generate perl subroutines prototypes for automake and aclocal
  refactor: rip module Automake::Language out of automake script
  tests: more information about Lex and Yacc programs
  lint: fix spurious failure for 'sc_rm_minus_f' syntax check
  maint: bump version 1.13.1a -> 1.13.2a
  plans: we are not going to remove AM_PROG_MKDIR_P in Automake 1.14
  init.m4: add probe to check "rm -f" without args work
  subdir-objects: complain if it isn't enabled
  plans: update w.r.t. latest changes
  ywrap: remove an obsolete FIXME comment
  ywrap: style fixes (no semantic change intended)
  convenience: "make lint" as an alias for "make maintainer-check"
  docs: typofix in manual
  coverage: using multiple lexers in a single program
  tests: remove most uses of the AM_PROG_CC_C_O obsolete macro
  coverage: obsolete macro AM_PROG_CC_C_O should cause no warning nor errors
  INSTALL: update copyright years
  ithreads: use runtime (not configure time) detection of perl threads
  copyright: add few missing copyright notices
  maint: files in PLANS are to be exempted from copyright notice
  maint: consistently honor the UPDATE_COPYRIGHT_YEAR environment variable
  copyright: update some copyright years
  compile: use 'compile' script when "-c -o" is used with losing compilers
  HACKING: suggest more checks before releasing
  tests: can fake a compiler not grasping "-c -o" -- globally in all tests
  sync: update files from upstream with "make fetch"
  typofix: in comments in GNUmakefile
  Rename 'maint/' -> 'maintainer/', for Git's sake
  HACKING: minor typofix
  HACKING: bug-tracker, the PLANS directory, and how to plan "big" changes
  HACKING: rewindable branches should live in the 'experimental/*' namespace
  HACKING: fixlets about git branch rewinding policy
  HACKING: commit messages are not to follow GCS ChangeLog rules too strongly
  HACKING: "detailed explanation" in commit messages is almost mandatory
  HACKING: we use "merge --log" even when merging master
  HACKING: typofix
  depend2.am: fix comments on verbosity of compilation rules
  depend2.am: improve comments a little
  plans: automake 1.14 is to assume "rm -f" with no args is OK
  plans: we want to active subdir-objects unconditionally in automake 1.14
  tests: adjust stale references to old test names
  tests: rename the last aclocal test with dumb name
  tests: fix an old botched change to an aclocal test
  tests: fix some botched inter-test references in heading comments
  coverage: compile rules used "-c -o" also with losing compilers
  texi: remove extra verbosity in creation of dirstamp directory
  coverage: user can avoid distributing '.info' pages
  plans: add some on-going plans (already registered on the bug tracker)
  docs: mention dist-hook help for EXTRA_DIST
  texi: remove workaround for older Texinfo (4.1)
  NEWS: improve wordings in entry deprecating suffix-less info files
  build: don't enable 'color-tests' automake option explicitly
  build: enable all warnings as fatal in our own build system
  texi: Texinfo sources and CLEANFILES definition should co-exist peacefully
  tests: make two new test executable
  runtest: better command line API
  tests: move runtest.in away from the top-lever directory
  maint: move more maintainer files in the 'maint/' subdir
  plans: add the "PLANS" directory
  tests: more significant names for some tests
  maint: add some of my maintainer-specific scripts
  texi: deprecate hack about info files in CLEANFILES variables
  texi: info files can be generated in the builddir