[ng] cosmetics: add an explicative comment

* lib/am/distdir.mk (am.dist.common-files): Here.

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

diff --git a/lib/am/distdir.mk b/lib/am/distdir.mk
index 42fea54c9d0a44df8e7239418069cba83a04d928..05526c35625196391c498d181b20998a6e0dfa12 100644 (file)
--- a/lib/am/distdir.mk
+++ b/lib/am/distdir.mk
@@ -14,6 +14,7 @@
 ## You should have received a copy of the GNU General Public License
 ## along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
+# Files added by the automake script.
 am.dist.common-files += $(am.dist.common-files.internal)
 
 # Makefile fragments used internally by automake-generated Makefiles.