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/_decimal.vcxproj b/PCbuild/_decimal.vcxproj
index ec5c891..97b737a 100644
--- a/PCbuild/_decimal.vcxproj
+++ b/PCbuild/_decimal.vcxproj
@@ -113,6 +113,8 @@
   </ImportGroup>
   <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="PropertySheets">
     <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+    <Import Project="pyd.props" />
+    <Import Project="x64.props" />
   </ImportGroup>
   <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="PropertySheets">
     <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
@@ -146,20 +148,6 @@
     <CodeAnalysisRuleSet Condition="'$(Configuration)|$(Platform)'=='Release|x64'">AllRules.ruleset</CodeAnalysisRuleSet>
     <CodeAnalysisRules Condition="'$(Configuration)|$(Platform)'=='Release|x64'" />
     <CodeAnalysisRuleAssemblies Condition="'$(Configuration)|$(Platform)'=='Release|x64'" />
-    <TargetExt Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">.pyd</TargetExt>
-    <TargetExt Condition="'$(Configuration)|$(Platform)'=='Release|x64'">.pyd</TargetExt>
-    <OutDir Condition="'$(Configuration)|$(Platform)'=='Release|x64'">$(SolutionDir)\amd64\</OutDir>
-    <IntDir Condition="'$(Configuration)|$(Platform)'=='Release|x64'">$(SolutionDir)$(PlatformName)-temp-$(Configuration)\$(ProjectName)\</IntDir>
-    <TargetExt Condition="'$(Configuration)|$(Platform)'=='PGUpdate|x64'">.pyd</TargetExt>
-    <OutDir Condition="'$(Configuration)|$(Platform)'=='PGUpdate|x64'">$(SolutionDir)$(PlatformName)-pgo\</OutDir>
-    <IntDir Condition="'$(Configuration)|$(Platform)'=='PGUpdate|x64'">$(SolutionDir)$(PlatformName)-temp-pgi\$(ProjectName)\</IntDir>
-    <OutDir Condition="'$(Configuration)|$(Platform)'=='PGUpdate|Win32'">$(SolutionDir)$(PlatformName)-pgo\</OutDir>
-    <IntDir Condition="'$(Configuration)|$(Platform)'=='PGUpdate|Win32'">$(SolutionDir)$(PlatformName)-temp-pgi\$(ProjectName)\</IntDir>
-    <TargetExt Condition="'$(Configuration)|$(Platform)'=='PGUpdate|Win32'">.pyd</TargetExt>
-    <OutDir Condition="'$(Configuration)|$(Platform)'=='PGInstrument|Win32'">$(OutDirPGI)\</OutDir>
-    <IntDir Condition="'$(Configuration)|$(Platform)'=='PGInstrument|Win32'">$(SolutionDir)$(PlatformName)-temp-pgi\$(ProjectName)\</IntDir>
-    <TargetExt Condition="'$(Configuration)|$(Platform)'=='PGInstrument|Win32'">.pyd</TargetExt>
-    <TargetExt Condition="'$(Configuration)|$(Platform)'=='PGInstrument|x64'">.pyd</TargetExt>
   </PropertyGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
     <ClCompile>
@@ -313,6 +301,11 @@
       <Outputs Condition="'$(Configuration)|$(Platform)'=='Release|x64'">$(IntDir)vcdiv64.obj;%(Outputs)</Outputs>
     </CustomBuild>
   </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="pythoncore.vcxproj">
+      <Project>{cf7ac3d1-e2df-41d2-bea6-1e2556cdea26}</Project>
+    </ProjectReference>
+  </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
   </ImportGroup>