Clean up the PCBuild project files, removing redundant settings and
use "references" to link to dependent projects.
Update readme and batch files.
diff --git a/PCbuild/release.props b/PCbuild/release.props
index 356f53d..acfe3e4 100644
--- a/PCbuild/release.props
+++ b/PCbuild/release.props
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup Label="UserMacros">
-    <KillPythonExe>$(OutDir)kill_python.exe</KillPythonExe>
+    <PyDebugExt />
   </PropertyGroup>
   <PropertyGroup>
     <_ProjectFileVersion>10.0.30319.1</_ProjectFileVersion>
@@ -12,8 +12,8 @@
     </ClCompile>
   </ItemDefinitionGroup>
   <ItemGroup>
-    <BuildMacro Include="KillPythonExe">
-      <Value>$(KillPythonExe)</Value>
+    <BuildMacro Include="PyDebugExt">
+      <Value>$(PyDebugExt)</Value>
     </BuildMacro>
   </ItemGroup>
 </Project>
\ No newline at end of file