Adding packages for Immutable, Metadata, and Dataflow

[tfs] Previously these assemblies shipped in nuget v2 packages built from the OOB branch.  This change adds nuget v2 packages that support all the existing targets supported by the old packages.
[corefx] Add support to corefx github targets to enable packaging their output directly.
[corefx] I made the assembly version of these projects consistent with what was previously shipped from our OOB branch.

[tfs-changeset: 1489213]

Author: ericstj

src/System.Collections.Immutable/src/System.Collections.Immutable.csproj

@@ -15,7 +15,7 @@
     <FileAlignment>512</FileAlignment>
     <DocumentationFile>$(OutputPath)System.Collections.Immutable.xml</DocumentationFile>
     <GenerateAppxPackageOnBuild>False</GenerateAppxPackageOnBuild>
-    <AssemblyVersion>1.1.9999</AssemblyVersion>
+    <AssemblyVersion>1.1.37</AssemblyVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>

src/System.Reflection.Metadata/src/System.Reflection.Metadata.csproj

@@ -16,7 +16,7 @@
     <DefaultLanguage>en-US</DefaultLanguage>
     <NoWarn>1591</NoWarn>
     <CLSCompliant>false</CLSCompliant>
-    <AssemblyVersion>1.0.9999.0</AssemblyVersion>
+    <AssemblyVersion>1.0.22.0</AssemblyVersion>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|AnyCPU'">
     <PlatformTarget>AnyCPU</PlatformTarget>

src/System.Threading.Tasks.Dataflow/src/System.Threading.Tasks.Dataflow.WP8.csproj

@@ -9,6 +9,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>System.Threading.Tasks.Dataflow</RootNamespace>
     <AssemblyName>System.Threading.Tasks.Dataflow</AssemblyName>
+    <AssemblyVersion>4.5.25.0</AssemblyVersion>
     <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
     <TargetFrameworkProfile>Profile78</TargetFrameworkProfile>
     <FileAlignment>512</FileAlignment>

src/System.Threading.Tasks.Dataflow/src/System.Threading.Tasks.Dataflow.csproj

@@ -9,6 +9,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>System.Threading.Tasks.Dataflow</RootNamespace>
     <AssemblyName>System.Threading.Tasks.Dataflow</AssemblyName>
+    <AssemblyVersion>4.5.25.0</AssemblyVersion>
     <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
     <TargetFrameworkProfile>Profile7</TargetFrameworkProfile>
     <FileAlignment>512</FileAlignment>

src/dir.targets

@@ -10,6 +10,32 @@
   <Target Name="GetAssemblyVersion"
           Returns="$(AssemblyVersion)"/>
 
+  <!-- Returns the set of files to be included in the nuget package
+       with appropriate metadata.-->
+  <Target Name="GetFilesToPackage"
+          Returns="@(FilesToPackage)">
+
+    <PropertyGroup>
+      <PackagePath Condition="'$(PackagePath)' == ''">$(TargetPath)</PackagePath>
+      <DocPackagePath Condition="'$(DocPackagePath)' == ''">$(DocumentationFile)</DocPackagePath>
+
+       <!-- default to treat as 'dotnet' package based portable library -->
+      <PackageTargetFramework Condition="'$(PackageTargetFramework)' == ''">dotnet</PackageTargetFramework>
+      <PackageTargetPath Condition="'$(PackageTargetPath)' == ''">lib/dotnet</PackageTargetPath>
+    </PropertyGroup>
+    
+    <ItemGroup>
+       <FilesToPackage Include="$(PackagePath)">
+         <TargetFramework>$(PackageTargetFramework)</TargetFramework>
+         <TargetPath>$(PackageTargetPath)</TargetPath>
+       </FilesToPackage>
+       <FilesToPackage Include="$(DocPackagePath)" Condition="Exists('$(DocPackagePath)')">
+         <TargetFramework>$(PackageTargetFramework)</TargetFramework>
+         <TargetPath>$(PackageTargetPath)</TargetPath>
+       </FilesToPackage>
+    </ItemGroup>
+  </Target>
+
   <Import Project="$(ToolsDir)Build.Common.targets" Condition="Exists('$(ToolsDir)Build.Common.targets')" />
   <Import Project="..\override.targets" Condition="Exists('..\override.targets')"/>