Upgraded PostSharp and fixed initial build.
Upgraded PostSharp.
Merge branch 'before-presentation'

Conflicts:
	AdvancedMultithreadingLab/ActorModel/AdderActor.cs
	AdvancedMultithreadingLab/AdvancedMultithreadingLab.csproj
	AdvancedMultithreadingLab/AdvancedMultithreadingLab.psproj
	AdvancedMultithreadingLab/App.config
	AdvancedMultithreadingLab/Freezable/Freezer.cs
	AdvancedMultithreadingLab/packages.config
	PingPongDemo/App.config
	PingPongDemo/PingPongDemo.csproj
	PingPongDemo/PingPongDemo.psproj
	PingPongDemo/packages.config
	ThreadDispatchingDemo/ThreadDispatchingDemo.csproj
	ThreadDispatchingDemo/ThreadDispatchingDemo.psproj
	ThreadDispatchingDemo/app.config
	ThreadDispatchingDemo/packages.config
Upgraded to new PostSharp version.
Merge branch 'before-presentation'