Merge branch 'maint'

* maint:
  news: Automake 1.13 will require Autoconf >= 2.65
  news: put planned future backward-incompatibilities on top
  readme: update INSTALL to latest version from Autoconf
  sync: some auxiliary files synced from upstream
  hacking: copyright notices must be updated before releasing
  color-tests: coloring can be forced on non-ANSI terminals as well

diff --cc NEWS
index e937542aed02a60d2c2c47c600c06677d65c94a4,f2181f64e58c9897de978829468eb06f15ce5762..a8f5dc279cc215061087910f27c5318ac793a1c6
--- 1/NEWS
--- 2/NEWS
+++ b/NEWS
@@@ -1,49 -1,11 +1,42 @@@
 +New in 1.13:
 +
 +* Obsolete features removed:
 +
 +  - The automake-provided $(mkdir_p) make variable, @mkdir_p@ configure
 +    time substitution and AM_PROG_MKDIR m4 macro have been removed.  They
 +    had been obsolete since automake 1.10, and actively deprecated since
 +    Automake 1.12.1.
 +
 +  - The deprecated aclocal option '--acdir' has been removed.  You
 +    should use the options '--automake-acdir' and '--system-acdir'
 +    instead (which have been introduced in Automake 1.11.2).
 +
 +  - The following long-obsolete m4 macros have been removed:
 +
 +      AM_PROG_CC_STDC:    superseded by AC_PROG_CC since October 2002
 +      fp_PROG_CC_STDC:    broken alias for AM_PROG_CC_STDC
 +      fp_WITH_DMALLOC:    old alias for AM_WITH_DMALLOC
 +      AM_CONFIG_HEADER:   superseded by AC_CONFIG_HEADERS since July 2002
 +      ud_PATH_LISPDIR:    old alias for AM_PATH_LISPDIR
 +      jm_MAINTAINER_MODE: old alias for AM_MAINTAINER_MODE
 +      ud_GNU_GETTEXT:     old alias for AM_GNU_GETTEXT
 +      gm_PROG_LIBTOOL:    old alias for AC_PROG_LIBTOOL
 +      fp_C_PROTOTYPES:    old alias for AM_C_PROTOTYPES (which was part
 +                          of the now-removed automatic de-ANSI-fication
 +                          support of Automake)
 +
 +  - All the "old alias" macros in 'm4/obsolete.m4' have been removed.
 +
 +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 +
  New in 1.12.1:
  
- * Deprecated obsolescent features:
- 
-   - The long-obsolete (since 1.10) automake-provided $(mkdir_p) make
-     variable, @mkdir_p@ configure-time substitution and AM_PROG_MKDIR
-     m4 macro are deprecated, eliciting a warning in the 'obsolete'
-     category.  They will be removed in the next major version (1.13).
- 
- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- 
- New in 1.12:
- 
  * WARNING: Future backward-incompatibilities!
  
+   - Autoconf 2.65 or later will be required by the next major Automake
+     version (1.13).  Until now, Automake has been working with any
+     Autoconf version up to 2.62.
+ 
    - Starting from the next major Automake version (1.13), the rules to
      build pdf, ps and dvi output from Texinfo input will use the '--tidy'
      option by default.  Since such an option was introduced in Texinfo