Made minor cleanup in sipsimple.clients.log

Ignore-this: b34111e4068e5323a5bc4c8c5a49dd68

darcs-hash:20090825122007-1e3d8-19dae11145a67f8b3ba168ef68d98d7b5103c6f2
Added notification tracing to file to sipsimple.clients.log

Ignore-this: 7d01e64eac7e8790617b499394e71c29

darcs-hash:20090825122110-1e3d8-76a77a64999f10a89cf60fff183a3bc2c0af27ed