Move NetCore project to use .NET SDK (#380)

Move NetCore project to use .NET SDK
- Formatting.NetCore now targets `netstandard1.3`
  - was `Profile259` aka `portable-net45+wp80+win8+wpa81`, approximately `netstandard1.0`
  - but Newtonsoft.Json.Bson supports `netstandard1.3` and up
- use Newtonsoft.Json.Bson in NetCore projects
- can now multi-target NetCore.Test as well
- nits:
  - align src/ Formatting projects as much as possible
  - align test/ Formatting projects as much as possible
  - clean up the Microsoft.TestCommon project slightly
- note: NetCore project names make no sense but I'm leaving them alone for this PR

React to using Newtonsoft.Json.Bson everywhere
- remove deprecated `BsonWriter` mentions entirely
- remove legacy BSON writer test workaround

Remove unnecessary `ConcurrentDictionary` class
- was not available in `Profile259`
- leave tests to confirm correct operation w/ "real" class

Remove `UriQueryUtility` because `WebUtility` is available everywhere
- leave test to confirm `WebUtility` continues to behave about the same
  - handle `WebUtility` being a `public` class
- change other tests to handle `WebUtility.UrlEncode(...)` encoding to uppercase
  - unlike `UriQueryUtility.UrlEncode(...)`

Add simple classes to NetCore project
- use `ICloneable` copy to get more classes compiling
  - helps NetCore in similar way to existing `MediaTypeHeaderValueExtensions`
- use `InvalidEnumArgumentException` copy to simplify code and testing
- both not available in `netstandard1.3` (or available packages) but easily duplicated

Remove unnecessary NetCore-specific GlobalSuppressions.cs file

Use `NameValueCollection` everywhere
- available (but not serializable) in `netstandard1.3`

Add `MaxDepth` support in NetCore assembly
- remove an unnecessary suppression about `MaxDepth` in `BaseJsonMediaTypeFormatter`

Add `UseDataContractJsonSerializer` support in NetCore assembly
- `XsdDataContractExporter` remains unavailable
  - update XML DCS tests to handle this (previously not in NetCore assembly)
- try various workarounds
  - `ReadOnlyStreamWithEncodingPreamble` causes tests to hit dotnet/runtime#80160
  - restriction to UTF8 when writing is a significant issue

Copy `TranscodingStream` and related files from dotnet/runtime
- my runtime clone was at 88868b7a781f4e5b9037b8721f30440207a7aa42

Adjust `TranscodingStream` and related code to compile and run here
- add conditions to avoid references to version-specific API
- remove references to internal dotnet/runtime code
  - rewrite some code more generically if performance impact likely minor
- use Microsoft.TestCommon instead of directly relying on Xunit in tests
- use C# 9.0

Use `TranscodingStream` in JSON and XML formatters
- remove `ReadOnlyStreamWithEncodingPreamble` and its tests
  - was insufficient in general and doesn't work correctly in `netstandard1.3`
  - see dotnet/runtime#80160
- now support a much broader set of encodings in JSON and XML formatters
  - not just UTF8, UTF16BE, and UTF16LE
  - JSON formatter already supported every encoding when `UseDataContractJsonSerializer` was `false`
    - no longer have this downside when property is `true`
    - however, quotas remain unsupported in `netstandard1.3` version of this formatter when property is `true`
  - XML formatter requirement for an XML declaration in non-UTF8 content was general and is no longer an issue

Add `MediaTypeMappings` support in NetCore assembly

Add `IRequiredMemberSelector` support in NetCore assembly

Remove unnecessary NETFX_CORE workarounds
- use `DefaultContractResolver`, `GuidAttribute`, `TypeDescriptor`, `XmlElement`, `XmlNode` classes
- use `IRequiredMemberSelector` interface
- use `RequestMessage.CreateResponse()` extension method
  - all available in `netstandard1.3`
- `JsonContractResolver` use is something of a late Newtonsoft.Json version reaction
  - was held back by missing `IRequiredMemberSelector`

Work around missing features in `netstandard1.3`
- get classes now included in NetCore assembly compiling
- `SerializationAttribute` is not available
  - therefore `Exception` is not serializable
  - therefore `DefaultContractResolver.IgnoreSerializableAttribute` is not available
- `Stream.(Begin|End)(Read|Write)` and `Stream.Close()` are not available
- nit: clean up `MultipartFormDataStreamProvider` whitespace

Author: dougbu

RuntimePortable.sln

@@ -9,7 +9,7 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "test", "test", "{C40883CD-3
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Microsoft.TestCommon", "test\Microsoft.TestCommon\Microsoft.TestCommon.csproj", "{FCCC4CB7-BAF7-4A57-9F89-E5766FE536C0}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "System.Net.Http.Formatting.NetCore", "src\System.Net.Http.Formatting.NetCore\System.Net.Http.Formatting.NetCore.csproj", "{C7060639-719B-4BD2-8A37-2F146B5A0668}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "System.Net.Http.Formatting.NetCore", "src\System.Net.Http.Formatting.NetCore\System.Net.Http.Formatting.NetCore.csproj", "{C7060639-719B-4BD2-8A37-2F146B5A0668}"
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "System.Net.Http.Formatting.NetCore.Test", "test\System.Net.Http.Formatting.NetCore.Test\System.Net.Http.Formatting.NetCore.Test.csproj", "{8DA61DAC-FF7E-4CA1-93A0-6148DB66FD08}"
 EndProject

packages/repositories.config

@@ -3,7 +3,6 @@
   <repository path="..\src\Microsoft.AspNet.Facebook\packages.config" />
   <repository path="..\src\Microsoft.Web.Helpers\packages.config" />
   <repository path="..\src\Microsoft.Web.WebPages.OAuth\packages.config" />
-  <repository path="..\src\System.Net.Http.Formatting.NetCore\packages.config" />
   <repository path="..\src\System.Net.Http.Formatting\packages.config" />
   <repository path="..\src\System.Web.Http.Owin\packages.config" />
   <repository path="..\src\System.Web.Http.SignalR\packages.config" />

src/Common/Error.cs

@@ -225,11 +225,7 @@ internal static OperationCanceledException OperationCanceled(string messageForma
         /// <returns>The logged <see cref="Exception"/>.</returns>
         internal static ArgumentException InvalidEnumArgument(string parameterName, int invalidValue, Type enumClass)
         {
-#if NETFX_CORE
-            return new ArgumentException(Error.Format(CommonWebApiResources.InvalidEnumArgument, parameterName, invalidValue, enumClass.Name), parameterName);
-#else
             return new InvalidEnumArgumentException(parameterName, invalidValue, enumClass);
-#endif
         }
 
         /// <summary>
@@ -265,5 +261,24 @@ internal static NotSupportedException NotSupported(string messageFormat, params
         {
             return new NotSupportedException(Error.Format(messageFormat, messageArgs));
         }
+
+#if NETFX_CORE // InvalidEnumArgumentException not available in netstandard1.3.
+        internal class InvalidEnumArgumentException : ArgumentException
+        {
+            public InvalidEnumArgumentException() : this(null)
+            { }
+
+            public InvalidEnumArgumentException(string message) : base(message)
+            { }
+
+            public InvalidEnumArgumentException(string message, Exception innerException) : base(message, innerException)
+            { }
+
+            public InvalidEnumArgumentException(string argumentName, int invalidValue, Type enumClass) : base(
+                Error.Format(CommonWebApiResources.InvalidEnumArgument, argumentName, invalidValue, enumClass.Name),
+                argumentName)
+            { }
+        }
+#endif
     }
 }

src/Common/UriQueryUtility.cs

@@ -4,6 +4,6 @@
   <PropertyGroup>
     <IsPackable>true</IsPackable>
     <IsTestProject>false</IsTestProject>
-    <TargetFrameworkVersion Condition="'$(MSBuildProjectName)' != 'System.Net.Http.Formatting.NetStandard'">v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion Condition=" !$(MSBuildProjectName.StartsWith('System.Net.Http.Formatting.Net')) ">v4.5</TargetFrameworkVersion>
   </PropertyGroup>
 </Project>

src/Directory.Build.props

@@ -0,0 +1,9 @@
+// No ICloneable interface in .NET Standard 1.3.
+
+namespace System
+{
+    internal interface ICloneable
+    {
+        object Clone();
+    }
+}