Remove reference to primary owner on ReleaseName

BUG=http://code.google.com/p/ibus/issues/detail?id=1636
TEST=src/tests/ibus-bus.c

Review URL: https://codereview.appspot.com/11004043
Patch from Eduardo Lima (Etrunko) <eduardo.lima@intel.com>.
daemon: fix PropertiesChanged signal emission

This fixes a few problems of PropertiesChanged signal emission.
First, it should be sent only when the properties have changed.
Second, invalidated_properties should be set when the properties have
been reset, not on error.  Finally, the sender should be
"org.freedesktop.IBus" rather than "org.freedesktop.DBus".

BUG=
R=takao.fujiwara1@gmail.com

Review URL: https://codereview.appspot.com/11465045
Add Norwegian keyboard in engine/simple.xml.in

BUG=RH#987222

Review URL: https://codereview.appspot.com/11805043
Release 1.5.3

Review URL: https://codereview.appspot.com/11708043