Build all packages to the same directory

Author: AArnott

src/Directory.Build.props

@@ -1,8 +1,11 @@
 <Project>
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
-    <BaseIntermediateOutputPath>$(MSBuildThisFileDirectory)..\obj\$(MSBuildProjectName)\</BaseIntermediateOutputPath>
-    <BaseOutputPath Condition=" '$(BaseOutputPath)' == '' ">$(MSBuildThisFileDirectory)..\bin\$(MSBuildProjectName)\</BaseOutputPath>
+    <RepoRoot>$([System.IO.Path]::GetFullPath('$(MSBuildThisFileDirectory)..\'))</RepoRoot>
+    <BaseIntermediateOutputPath>$(RepoRoot)obj\$(MSBuildProjectName)\</BaseIntermediateOutputPath>
+    <BaseOutputPath Condition=" '$(BaseOutputPath)' == '' ">$(RepoRoot)bin\$(MSBuildProjectName)\</BaseOutputPath>
+    <PackageOutputPath>$(RepoRoot)bin\Packages\$(Configuration)\</PackageOutputPath>
+
     <AssemblyOriginatorKeyFile>$(MSBuildThisFileDirectory)StrongNameKey.snk</AssemblyOriginatorKeyFile>
     <SignAssembly>true</SignAssembly>