[folks] Turn on valac warnings for the KeyFile backend.

[Travis Reitter <treitter src gnome org>]

commit 81552a6128d13627ce3e0b2526070dc7af17db5e
Author: Travis Reitter <travis reitter collabora co uk>
Date:   Mon Sep 27 12:01:00 2010 -0700

    Turn on valac warnings for the KeyFile backend.

 backends/key-file/Makefile.am             |    1 +
 backends/key-file/kf-backend-factory.vala |   10 +---------
 configure.ac                              |    2 ++
 3 files changed, 4 insertions(+), 9 deletions(-)
---
diff --git a/backends/key-file/Makefile.am b/backends/key-file/Makefile.am
index 7552230..cf42937 100644
--- a/backends/key-file/Makefile.am
+++ b/backends/key-file/Makefile.am
@@ -6,6 +6,7 @@ AM_CPPFLAGS = \
 	$(NULL)
 
 VALAFLAGS += \
+	$(ERROR_VALAFLAGS) \
 	--vapidir=. \
 	--vapidir=$(top_srcdir)/folks \
 	$(addprefix --pkg ,$(folks_backend_key_file_deps)) \
diff --git a/backends/key-file/kf-backend-factory.vala b/backends/key-file/kf-backend-factory.vala
index 8343c28..104d883 100644
--- a/backends/key-file/kf-backend-factory.vala
+++ b/backends/key-file/kf-backend-factory.vala
@@ -54,14 +54,6 @@ public class Folks.Backends.Kf.BackendFactory : Object
    */
   public BackendFactory (BackendStore backend_store)
     {
-      try
-        {
-          backend_store.add_backend (new Backend ());
-        }
-      catch (GLib.Error e)
-        {
-          warning ("Failed to add key file backend to libfolks: %s",
-              e.message);
-        }
+      backend_store.add_backend (new Backend ());
     }
 }
diff --git a/configure.ac b/configure.ac
index 358d715..97dc88b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -176,6 +176,7 @@ m4_if(folks_released, [1], [],
     [
         ERROR_INTROSPECTION_SCANNER_ARGS="$ERROR_INTROSPECTION_SCANNER_ARGS \
                 --warn-error"
+        ERROR_VALAFLAGS="$ERROR_VALAFLAGS --fatal-warnings"
         if test x$werror = xyes; then
             ERROR_CFLAGS="$ERROR_CFLAGS -Werror"
         fi
@@ -198,6 +199,7 @@ AS_COMPILER_FLAG([-Wstrict-prototypes], [ERROR_CFLAGS="$ERROR_CFLAGS \
                                          -Wstrict-prototypes"])
 
 AC_SUBST([ERROR_INTROSPECTION_SCANNER_ARGS])
+AC_SUBST([ERROR_VALAFLAGS])
 AC_SUBST([ERROR_CFLAGS])
 
 # -----------------------------------------------------------