[tomboy] configure: fix building on Debian and derivatives with DBus 2.0

[Alex Tereschenko <alexter src gnome org>]

commit 9bba6ac387dc1bdb08bc3a5957216259bdb1f509
Author: Alex Tereschenko <frozen and blue gmail com>
Date:   Fri Nov 18 21:58:56 2016 +0100

    configure: fix building on Debian and derivatives with DBus 2.0
    
    Inspired by Debian's distro-level Tomboy source package patch
    by Iain Lane <laney debian org>.
    
    Fixes #9.
    
    Signed-off-by: Alex Tereschenko <frozen and blue gmail com>

 Tomboy/RemoteControlProxy.cs |    3 +--
 configure.ac                 |    4 +++-
 2 files changed, 4 insertions(+), 3 deletions(-)
---
diff --git a/Tomboy/RemoteControlProxy.cs b/Tomboy/RemoteControlProxy.cs
index c142369..17cec27 100644
--- a/Tomboy/RemoteControlProxy.cs
+++ b/Tomboy/RemoteControlProxy.cs
@@ -55,8 +55,7 @@ namespace Tomboy
                                return null;
 
                        RemoteControl remote_control = new RemoteControl (manager);
-                       Bus.Session.Register (Namespace,
-                                             new ObjectPath (Path),
+                       Bus.Session.Register (new ObjectPath (Path),
                                              remote_control);
                        return remote_control;
 #else
diff --git a/configure.ac b/configure.ac
index 1057088..b52a100 100644
--- a/configure.ac
+++ b/configure.ac
@@ -173,7 +173,9 @@ AC_SUBST(DBUS_SERVICE_DIR)
 #
 # Check for dbus-sharp
 #
-PKG_CHECK_MODULES(DBUS, dbus-sharp-1.0 >= 0.4 dbus-sharp-glib-1.0 >= 0.3)
+PKG_CHECK_MODULES([DBUS], [dbus-sharp-1.0 >= 0.4 dbus-sharp-glib-1.0 >= 0.3],, [
+       PKG_CHECK_MODULES([DBUS], [dbus-sharp-2.0 >= 0.4 dbus-sharp-glib-2.0 >= 0.3])
+])
 AC_SUBST(DBUS_LIBS)
 
 #