Fix column info for symbol file expressions
Implement optimization where lambdas can be replaced by direct method-group they are wrapping. Fixes #10663
Update locations
Add new tests
Avoid an assert in sdb for compiler generated byref locals. Fixes #11115.
part of fix bug #10160 - give innerException for some rethrown exception.
Cache implicitly created static delegates
Properly bzero unaligned small blocks. Fixes #11184.
Revert "Fixes make dist"

This reverts commit 87e95b46ed84d290d1e26806881a9a03e5864633.

This puts DataContractJsonSerializerSettings.cs back into
mcs/class/System.ServiceModel.Web/System.Runtime.Serialization.Json.

Let's please not have a single file from this namespace in another
directory, either move the entire System.Runtime.Serialization.Json
stuff into System.Runtime.Serialization or leave it here.