[gnome-builder] build: explicitly link against gtk

[Christian Hergert <chergert src gnome org>]

commit ea2ab032dacacc397816e6e53f189a7891ff4920
Author: Christian Hergert <christian hergert me>
Date:   Sun Sep 6 13:32:26 2015 -0700

    build: explicitly link against gtk
    
    Some toolchains don't know how to deal with indirect linking, so let's
    be nice to them.

 src/Makefile.am |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/src/Makefile.am b/src/Makefile.am
index eef6118..c928141 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -257,6 +257,7 @@ endif
 gnome_builder_SOURCES = main.c
 gnome_builder_CFLAGS = $(libgnome_builder_la_CFLAGS)
 gnome_builder_LDADD = \
+       $(BUILDER_LIBS) \
        $(top_builddir)/libide/libide-1.0.la \
        libgnome-builder.la \
        $(NULL)