[sdb] Fix a race in the sdb tests exposed by the recent threadpool changes.
[MacProxy] Initialize err to IntPtr.Zero before calling CFNetworkCopyProxiesForAutoConfigurationScript
implement some primary members of ConsoleLogger (and FileLogger).
Add a new tool to produce HTML diff of assemblies similar to what Xamarin.iOS has been producing
Drop the System.Enum and System.ValueType for enum and struct.