Hotfix 76521

Version
This hotfix concerns SDL Tridion 2011 SP1.
Problem description
OnRequestEnd handlers not always called for concurrent requests on IIS due to dependency on ThreadStatic.
Hotfix description
The request context in the .NET Ambient Data Framework depended on ThreadStatic context. However, for ASP.NET there is no guarantee the thread remains the same for the entire request pipeline. The Ambient Data Framework is now stored on the HttpContext which guarantees safety in thread switching.
Distributed files
x86\Tridion.ContentDelivery.AmbientData.dll
x86_64\Tridion.ContentDelivery.AmbientData.dll
Fixes included
None
Dependencies
None