[m4-common] Add GJS macros

[Philip Chimento <pchimento src gnome org>]

commit b103b0c373e41f9dc4f5ccca81940fe0457cb264
Author: Philip Chimento <philip chimento gmail com>
Date:   Wed Mar 30 22:25:06 2016 -0700

    Add GJS macros
    
    These are useful for Gnome's Javascript applications.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=766460

 Makefile.am      |    3 +++
 autoconf-archive |    2 +-
 2 files changed, 4 insertions(+), 1 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index 38daeef..646544c 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -6,6 +6,8 @@ dist_aclocal_DATA = \
        autoconf-archive/m4/ax_append_link_flags.m4                     \
        autoconf-archive/m4/ax_append_flag.m4                           \
        autoconf-archive/m4/ax_check_compile_flag.m4                    \
+       autoconf-archive/m4/ax_check_girs_gjs.m4                        \
+       autoconf-archive/m4/ax_check_gir_symbols_gjs.m4                 \
        autoconf-archive/m4/ax_check_link_flag.m4                       \
        autoconf-archive/m4/ax_is_release.m4                            \
        autoconf-archive/m4/ax_code_coverage.m4                         \
@@ -16,6 +18,7 @@ dist_aclocal_DATA = \
        autoconf-archive/m4/ax_compiler_flags_gir.m4                    \
        autoconf-archive/m4/ax_cxx_compile_stdcxx_11.m4                 \
        autoconf-archive/m4/ax_pkg_check_modules.m4                     \
+       autoconf-archive/m4/ax_prog_gjs.m4                              \
        autoconf-archive/m4/ax_require_defined.m4                       \
        $(NULL)
 
diff --git a/autoconf-archive b/autoconf-archive
index b87ebf8..be2a3e9 160000
--- a/autoconf-archive
+++ b/autoconf-archive
@@ -1 +1 @@
-Subproject commit b87ebf8630e85447adc29fe26ab2e4a2d82877f9
+Subproject commit be2a3e994be81101dd0e02da57200cc9fae84b0a