[Mono-osx] Announcing the release of Mono 2.6.4

[Andrew Jorgensen]

Today we release Mono 2.6.4, a bugfix release in the 2.6 series
containing around 40 bugfixes since 2.6.3.

The release notes are here:
        http://go-mono.com/archive/2.6.4

and downloads are available here:
    http://go-mono.com/mono-downloads/

Thanks to all those who contributed to this release!