[atkmm] configure.ac: Use MM_AX_CXX_COMPILE_STDCXX_11() from mm-common.

[Murray Cumming <murrayc src gnome org>]

commit cbe1387a844c080922b853f5c41bd5b2c484327c
Author: Murray Cumming <murrayc murrayc com>
Date:   Wed Jul 15 15:20:08 2015 +0200

    configure.ac: Use MM_AX_CXX_COMPILE_STDCXX_11() from mm-common.
    
    Instead of a copy of AX_CXX_COMPILE_STDCXX_11().

 build/ax_cxx_compile_stdcxx_11.m4 |  168 -------------------------------------
 configure.ac                      |    4 +-
 2 files changed, 2 insertions(+), 170 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 4a6db06..1ceae71 100644
--- a/configure.ac
+++ b/configure.ac
@@ -33,7 +33,7 @@ m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES])
 AM_MAINTAINER_MODE
 AC_ARG_VAR([ACLOCAL_FLAGS], [aclocal flags, e.g. -I <macro dir>])
 
-MM_PREREQ([0.9.5])
+MM_PREREQ([0.9.8])
 MM_INIT_MODULE([atkmm-1.6])
 
 # Copy the mm-common .pl scripts into docs/,
@@ -45,7 +45,7 @@ MM_CONFIG_DOCTOOL_DIR([doc])
 AC_SUBST([ATKMM_SO_VERSION], [2:0:1])
 
 AC_PROG_CXX
-AX_CXX_COMPILE_STDCXX_11([noext],[mandatory])
+MM_AX_CXX_COMPILE_STDCXX_11([noext],[mandatory])
 
 AC_DISABLE_STATIC
 LT_INIT([win32-dll])