[dconf-editor] Changes suggested by 'autoscan'.

[Arnaud Bonatti <arnaudb src gnome org>]

commit 8beedfe97975b79bce684850ab4505c3c69b8b63
Author: Arnaud Bonatti <arnaud bonatti gmail com>
Date:   Sun Jan 1 07:47:38 2017 +0100

    Changes suggested by 'autoscan'.

 configure.ac |   23 +++++++++++++++++++++--
 1 files changed, 21 insertions(+), 2 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 735d075..479301f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,8 +1,9 @@
+AC_PREREQ([2.69])
 
AC_INIT([dconf-editor],[3.22.0],[https://bugzilla.gnome.org/enter_bug.cgi?product=dconf-editor],[dconf-editor])
 
+# might be config.h.in
 AC_CONFIG_SRCDIR([configure.ac])
-AC_CONFIG_MACRO_DIR([m4])
-AC_CONFIG_AUX_DIR([build-aux])
+
 AC_CONFIG_HEADERS([config.h])
 
 AM_INIT_AUTOMAKE([1.11.2 foreign -Wno-portability no-dist-gzip dist-xz])
@@ -15,11 +16,29 @@ fi
 
 # Check for programs
 AC_PROG_CC
+AC_PROG_INSTALL
 AM_PROG_VALAC([0.33.1])
 
 # Use GLib resources
 AC_PATH_PROG(GLIB_COMPILE_RESOURCES, glib-compile-resources)
 
+# Checks for header files.
+# editor/dconf-model.c:28
+# editor/dconf-editor.c:28
+# editor/modifications-revealer.c:26
+# editor/modifications-revealer.c:27
+AC_CHECK_HEADERS([float.h locale.h stdlib.h string.h])
+
+# Checks for typedefs, structures, and compiler characteristics.
+# editor/key-list-box-row.c:2686
+AC_TYPE_SIZE_T
+
+# Checks for library functions.
+# editor/dconf-model.c:4466
+# editor/dconf-editor.c:126
+# editor/dconf-model.c:3550
+AC_CHECK_FUNCS([memset setlocale strstr])
+
 # Use GSettings
 GLIB_GSETTINGS