Consistency in project files

Fixing a couple issues by adding properties to the common targets:

* Pain in the ass to keep all the csproj framework versions in sync. So just update one place.
* All the csprojs were missing DEBUG being #defined as well as pdb generation (which shouldly was complaining about).

source/NSubstitute.Elevated/NSubstitute.Elevated.csproj

@@ -1,7 +1,7 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <Import Project="../common.targets" />
   <PropertyGroup>
-    <TargetFramework>net461</TargetFramework>
+    <TargetFrameworks>$(Unity_DotNetTargetFrameworks)</TargetFrameworks>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="JetBrains.Annotations">

source/Unity.Core.Tests/Unity.Core.Tests.csproj

@@ -1,7 +1,7 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <Import Project="../common.targets" />
   <PropertyGroup>
-    <TargetFramework>net461</TargetFramework>
+    <TargetFrameworks>$(Unity_DotNetTargetFrameworks)</TargetFrameworks>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="JetBrains.Annotations">

source/Unity.Core/Unity.Core.csproj

@@ -1,11 +1,8 @@
 <Project Sdk="Microsoft.NET.Sdk">
-
   <Import Project="../common.targets" />
-
   <PropertyGroup>
-    <TargetFramework>net461</TargetFramework>
+    <TargetFrameworks>$(Unity_DotNetTargetFrameworks)</TargetFrameworks>
   </PropertyGroup>
-
   <ItemGroup>
     <PackageReference Include="JetBrains.Annotations">
       <Version>2018.2.1</Version>
@@ -14,5 +11,4 @@
       <Version>4.5.0</Version>
     </PackageReference>
   </ItemGroup>
-
 </Project>

source/common.targets

@@ -1,5 +1,11 @@
 <Project>
   <PropertyGroup>
     <DefaultItemExcludes>$(DefaultItemExcludes);**\*.bak;**\*.orig</DefaultItemExcludes>
+    <Unity_DotNetTargetFrameworks>net461</Unity_DotNetTargetFrameworks>
+    <Unity_CoreTargetFrameworks>netstandard2.0;net35</Unity_CoreTargetFrameworks>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <DebugType>Full</DebugType>
   </PropertyGroup>
 </Project>

tests/NSubstitute.Elevated.Tests/NSubstitute.Elevated.Tests.csproj

@@ -1,7 +1,7 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <Import Project="../../source/common.targets" />
   <PropertyGroup>
-    <TargetFramework>net461</TargetFramework>
+    <TargetFrameworks>$(Unity_DotNetTargetFrameworks)</TargetFrameworks>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="JetBrains.Annotations">

tests/Support/DependentAssembly/DependentAssembly.csproj

@@ -1,9 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
-
   <Import Project="../../../source/common.targets" />
-
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;net35</TargetFrameworks>
+    <TargetFrameworks>$(Unity_CoreTargetFrameworks)</TargetFrameworks>
   </PropertyGroup>
-
 </Project>

tests/Support/SystemUnderTest/SystemUnderTest.csproj

@@ -1,13 +1,9 @@
 <Project Sdk="Microsoft.NET.Sdk">
-
   <Import Project="../../../source/common.targets" />
-
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;net35</TargetFrameworks>
+    <TargetFrameworks>$(Unity_CoreTargetFrameworks)</TargetFrameworks>
   </PropertyGroup>
-
   <ItemGroup>
     <ProjectReference Include="..\DependentAssembly\DependentAssembly.csproj" />
   </ItemGroup>
-
 </Project>