[gnome-directory-thumbnailer] build: Port from gnome-common macros to autoconf-archive ones

[Philip Withnall <pwithnall src gnome org>]

commit c03184eb6445dbbb4398e5369e20b7e8c7ac8d35
Author: Philip Withnall <philip withnall collabora co uk>
Date:   Tue Jun 9 13:32:28 2015 +0100

    build: Port from gnome-common macros to autoconf-archive ones

 Makefile.am  |    5 +++++
 configure.ac |    9 +++++----
 2 files changed, 10 insertions(+), 4 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index 78ee2eb..462af10 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -31,6 +31,11 @@ src_gnome_directory_thumbnailer_CFLAGS = \
        $(AM_CFLAGS) \
        $(NULL)
 
+src_gnome_directory_thumbnailer_LDFLAGS = \
+       $(WARN_LDFLAGS) \
+       $(AM_LDFLAGS) \
+       $(NULL)
+
 src_gnome_directory_thumbnailer_LDADD = \
        $(GDT_LIBS) \
        $(LIBM) \
diff --git a/configure.ac b/configure.ac
index b2b0773..ea6c9c9 100644
--- a/configure.ac
+++ b/configure.ac
@@ -6,6 +6,9 @@ m4_define(gdt_version_minor, 1)
 m4_define(gdt_version_micro, 6)
 
 
AC_INIT([gnome-directory-thumbnailer],[gdt_version_major.gdt_version_minor.gdt_version_micro],[https://bugzilla.gnome.org/enter_bug.cgi?product=gnome-directory-thumbnailer],[gnome-directory-thumbnailer],[https://wiki.gnome.org/Projects/GnomeDirectoryThumbnailer])
+AX_IS_RELEASE([git-directory])
+
+AX_CHECK_ENABLE_DEBUG([yes])
 
 AC_CONFIG_MACRO_DIR([m4])
 AC_CONFIG_AUX_DIR([build-aux])
@@ -48,10 +51,8 @@ AC_SUBST([GETTEXT_PACKAGE])
 AC_DEFINE_UNQUOTED([GETTEXT_PACKAGE],"$GETTEXT_PACKAGE",[The name of the gettext domain])
 IT_PROG_INTLTOOL([0.40.0])
 
-# General GNOME macros
-GNOME_DEBUG_CHECK
-GNOME_COMPILE_WARNINGS([maximum])
-GNOME_MAINTAINER_MODE_DEFINES
+# General macros
+AX_COMPILER_FLAGS([WARN_CFLAGS],[WARN_LDFLAGS])
 AX_GENERATE_CHANGELOG
 
 AC_CONFIG_FILES([