Update startup-notification to version 0.10

[Michal Nowak <mnowak redhat com>]

Awesome Window Manager [0] requires startup-notification of version
0.10 [1], I filled bug for it [3], however, no action was taken so
far. Can some of you desktop folks bump the version, please?

The only changes are that XCB support was merged and some code clean
up was done [3].

Thanks,
Michal
--
[0] https://bugzilla.redhat.com/show_bug.cgi?id=awesome
[1] http://www.freedesktop.org/software/startup-notification/releases/
[2] https://bugzilla.redhat.com/show_bug.cgi?id=499517
[3] http://lists.freedesktop.org/archives/xdg/2009-January/010176.html