[FYI] {maint} news: support for configure.in will be dropped in future automake versions

[Stefano Lattarini]

The use of configure.in as Autoconf input has been deprecated for a
very long time in the Autoconf documentation, and the next version of
Autoconf (2.70) will start warning about it ar runtime as well (see
commit 'v2.69-4-g560f16b' or 2012-05-23, "general: deprecate
'configure.in' as autoconf input", in the Autoconf's git repository).

* NEWS (Future backward-incompatibilities): Update.

Signed-off-by: Stefano Lattarini <address@hidden>
---
 NEWS |    5 +++++
 1 file changed, 5 insertions(+)

diff --git a/NEWS b/NEWS
index 944f7f9..4046758 100644
--- a/NEWS
+++ b/NEWS
@@ -2,6 +2,11 @@ New in 1.12.1:
 
 * WARNING: Future backward-incompatibilities!
 
+  - Starting from either the next minor version (1.12.2) or the next major
+    version (1.13), Automake will start warning if 'configure.in' is used
+    instead of 'configure.ac' as the Autoconf input.  Future versions of
+    Automake will drop support for 'configure.in' altogether.
+
   - Autoconf 2.65 or later will be required by the next major Automake
     version (1.13).  Until now, Automake has required Autoconf version
     2.62 or later.
-- 
1.7.9.5