Disable OWIN host buffering according to buffer policy (fixes #1418).

Handle web host routing exceptions by default (fixes #1355).

Log and return an error when TryComputeLength throws (fixes #1320).

Incorporate code review feedback.

Correct format used when Html5DateRenderingMode==RFC3339
- http://aspnetwebstack.codeplex.com/workitem/479
- "EditorFor Date Value Does Not Output Correct Date Format As Per RFC 3339"
- Reported issue was a bug in HtmlHandler.Html5DateRenderingMode handling
- Code previously assumed any use of an edit format string indicated an
explicit [DisplayFormat] attribute
- Instead track whether edit format string came from [DataType] attribute
in new ModelMetadata.HasNonDefaultEditFormat property
- FxCop required me to refactor DataAnnotationsModelMetadataProvider slightly

Codeplex-1417 - Throw on ambiguous controller match in WebAPI Attribute Routing

Update Microsoft.Owin references to 2.0.2

Issue1370: WebAPI AttributeRouting RoutePrefix issue
- Add IRoutePrefix
- Unseal RoutePrefixAttribute

Fix for Codeplex-1393

Disposing the HttpRouteCollection will now dispose the HttpMessageHandler
instances owned by those routes.

We want to fix this for use in scenarios where an API might have a limited
lifetime, which is possible in selfhost/owin.

Expose IDirectRouteProvider in MVC and Web API (fixes #1360).

Fix 1362 & 1366; cache less to improve correctness and performance
"MVC5 Bug: Views are not compatible with Virtual Path Providers"
- https://aspnetwebstack.codeplex.com/workitem/1362
- Should never cache HostingEnvironment.VirtualPathProvider; this property
may change at any time.
- This bug is a regression from MVC4.

"MVC bug: Bad performance of views if ViewEngines.Engines is initialized
without HttpContext"
- https://aspnetwebstack.codeplex.com/workitem/1366
- ViewEngines.Engines may be read before HttpContext.Current is initialized,
leading to inefficient use of the NullViewLocationCache instance.

Fixing FxCop violation

CR feedback

Temporary fix: Disable fxcop rule MW1200, because it throws nullref.

Fix 1407, combine blank option and option label in EDDL()
- https://aspnetwebstack.codeplex.com/workitem/1407
- "EDDL() shows extra blank option in addition to option label"
- Special-case in EDDL(); don't pass option label to helper methods
- Add tests for these situations
- Add tests using an empty enum

Add comment for %MSBuild% setting
- CR follow-up

Fix resource racing on ports in OwinHostIntegrationTest

Fix fxcop build break

Issue 762: Support IgnoreRoute in Web API on WebHost, OWIN, and Self-Host.

Do not treat HttpContent as containing chunked frames (fixes #1124).

Query support in portable libraries: CodePlex, https://aspnetwebstack.codeplex.com/workitem/1305

Description: Add query support in portable library,
the original support was missing because the namevaluepair
class does not exist in the portable version of .NET

This fix attempts re-use the same files and tests.

Issue 1395: MediaTypeFormatter's ReadFromStreamAsync fails when tracing is
on

tracer tests that validate that the tracers override all the base class
methods do not take method overloads into account while verifying. Fixing
the test identified more issues with existing traces which are fixed as
well in this change.

Issue 1409: Delta<T>.PUT overwrites navigation properties as well

Delta<T> doesn't know the IEdmType or the IEdmModel of the T. Hence
Delta<T>.Put resets the navigation properties to null as it cannot
distinguish between navigation and structural properties. This is
incorrect behavior according to OData spec and also causes issues with EF
as resetting the navigation properties might cause ForeignKey constraint
violations.

Fixing this by adding a ctor that takes the list of updatable
properties and resetting only them in Delta<T>.Put. The OData formatter
when it constructs Delta<T> during deserialization passes the structural
properties for this list.

Issue 1128: Web Api 2-OData same variable name causes type error

Issue 670: Delta<T> should support non-settable collections.