tlsdate-dbus-announce: use name and flush connection

Have tlsdate-dbus-announce grab a well-known bus name before it sends its
signal, and have it wait for the signal to actually be sent over the bus before
exiting.

Signed-off-by: Elly Fong-Jones <[email protected]>
diff --git a/CHANGELOG b/CHANGELOG
index 79b1f12..021a197 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,6 +1,7 @@
 0.0.7 TBD
   Add -x option to tlsdated to override source proxies.
   Correctly check SANs against target host when using proxies.
+  Fix a race in tlsdate-dbus-announce that can cause signal drops.
 0.0.6 Mon 18 Feb, 2013
   Ensure that tlsdate compiles with g++ by explicit casting rather than
   implicit casting by whatever compiler is compiling tlsdate.