[gtk+] Link broadway backend against librt

[Matthias Clasen <matthiasc src gnome org>]

commit e1aca0e8c663b269319b372e98d12fabf79a5127
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Sep 7 21:30:01 2014 -0400

    Link broadway backend against librt
    
    This is needed for shm_open, according to its man page.
    
    https://bugzilla.gnome.org//show_bug.cgi?id=698031

 gdk/broadway/Makefile.am |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gdk/broadway/Makefile.am b/gdk/broadway/Makefile.am
index 0f190b3..56b4c50 100644
--- a/gdk/broadway/Makefile.am
+++ b/gdk/broadway/Makefile.am
@@ -15,7 +15,7 @@ AM_CPPFLAGS =                         \
        $(GTK_DEBUG_FLAGS)              \
        $(GDK_DEP_CFLAGS)
 
-LDADDS = $(GDK_DEP_LIBS)
+LDADDS = $(GDK_DEP_LIBS) -lrt
 
 noinst_LTLIBRARIES = libgdk-broadway.la