Added the Omni.Foundation.CustomFileHandle class.
Added CustomFileHandle.Close().
Fixed a bug in MonoMac.Foundation.NSLog.

In the CocoaLog() method, NSObject values were not treated as such
before an always-true "value is object" conditional statement came
before the test for NSObject. This is now fixed.
Added the NSStringFormatting class.

This class gives access to +[NSString stringWithFormat:]. It will
become invaluable upon Mavericks' release, when stringsdict files
become available.
Added NSData.GetBytes().
Added Omni.Framework.Compression.

I also added the internal Bzip2Compression class, which serves as a
back-end.