[balsa/gtk3] Restore autoconf expansion of GLIB_GENMARSHAL

[Peter Bloomfield <peterb src gnome org>]

commit c9a435874422e5358017ec255b003e2185818018
Author: Peter Bloomfield <PeterBloomfield bellsouth net>
Date:   Tue May 31 22:00:25 2016 -0400

    Restore autoconf expansion of GLIB_GENMARSHAL
    
        * configure.ac: restore AC_SUBST(GLIB_GENMARSHAL).

 ChangeLog    |    4 ++++
 configure.ac |    5 +++++
 2 files changed, 9 insertions(+), 0 deletions(-)
---
diff --git a/ChangeLog b/ChangeLog
index 4571388..298aba9 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,9 @@
 2016-05-31  Peter Bloomfield  <pbloomfield bellsouth net>
 
+       * configure.ac: restore AC_SUBST(GLIB_GENMARSHAL).
+
+2016-05-31  Peter Bloomfield  <pbloomfield bellsouth net>
+
        Build with builddir != srcdir
 
        * autogen.sh: chdir to srcdir to create configure, then back to
diff --git a/configure.ac b/configure.ac
index a2a227f..409826a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -217,6 +217,11 @@ else
     AM_CONDITIONAL([HAVE_YELPTOOL], [true])
 fi
 
+# glib-genmarshal
+#
+AC_SUBST(GLIB_GENMARSHAL)
+GLIB_GENMARSHAL=`pkg-config --variable=glib_genmarshal glib-2.0`
+
 # gettext
 #
 ALL_LINGUAS="am ar az bg ca cs da de dz el en_CA en_GB es et eu fi fr ga gl he hi hr hu id it ja ko lt lv mk 
ml ms nb ne nl nn oc pa pl pt pt_BR ro ru rw sk sl sq sr sr latin sv tr uk vi wa zh_CN zh_HK zh_TW"