[d-feet] build: Put third-party macros in m4/

[Thomas Bechtold <toabctl src gnome org>]

commit 6454523a9c3f8aaa45acabdd5fc539b11e5d7bad
Author: Simon McVittie <smcv debian org>
Date:   Sat Nov 4 14:57:44 2017 +0000

    build: Put third-party macros in m4/
    
    aclocal can't install third-party macros, as required for the recommended
    invocation of intltoolize from
    https://wiki.gnome.org/Projects/GnomeCommon/Migration, without somewhere
    to put them.
    
    Signed-off-by: Simon McVittie <smcv debian org>
    Bug-Debian: https://bugs.debian.org/829972
    
    https://bugzilla.gnome.org/show_bug.cgi?id=789906

 configure.ac |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index b749c5c..3b10582 100644
--- a/configure.ac
+++ b/configure.ac
@@ -4,6 +4,7 @@ AC_INIT([d-feet],
        [http://bugzilla.gnome.org/enter_bug.cgi?product=d-feet],
         [d-feet],
         [https://wiki.gnome.org/Apps/DFeet])
+AC_CONFIG_MACRO_DIR([m4])
 
 AM_INIT_AUTOMAKE([1.11 -Wall foreign no-define tar-ustar no-dist-gzip dist-xz])