Issue #15102: Fix paths of python executables.

PCbuild/pyproject.props

 <?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup Condition="'$(Platform)'=='Win32'">
+    <_ProjectFileVersion>10.0.30319.1</_ProjectFileVersion>
+    <OutDir>$(SolutionDir)</OutDir>
+    <IntDir>$(SolutionDir)$(PlatformName)-temp-$(Configuration)\$(ProjectName)\</IntDir>
+    <LinkIncremental>false</LinkIncremental>
+  </PropertyGroup>  
+  <PropertyGroup Condition="'$(Platform)'=='x64'">
+    <_ProjectFileVersion>10.0.30319.1</_ProjectFileVersion>
+    <_PropertySheetDisplayName>amd64</_PropertySheetDisplayName>
+    <OutDir>$(SolutionDir)amd64\</OutDir>
+    <IntDir>$(SolutionDir)$(PlatformName)-temp-$(Configuration)\$(ProjectName)\</IntDir>
+  </PropertyGroup>
   <PropertyGroup Label="UserMacros">
     <PyDllName>python33$(PyDebugExt)</PyDllName>
     <PythonExe>$(OutDir)python$(PyDebugExt).exe</PythonExe>
@@ -16,12 +28,6 @@
     <tcltk64Lib>$(tcltk64Dir)\lib\tcl85.lib;$(tcltk64Dir)\lib\tk85.lib</tcltk64Lib>
     <tcltk64LibDebug>$(tcltk64Dir)\lib\tcl85g.lib;$(tcltk64Dir)\lib\tk85g.lib</tcltk64LibDebug>
   </PropertyGroup>
-  <PropertyGroup>
-    <_ProjectFileVersion>10.0.30319.1</_ProjectFileVersion>
-    <OutDir>$(SolutionDir)</OutDir>
-    <IntDir>$(SolutionDir)$(PlatformName)-temp-$(Configuration)\$(ProjectName)\</IntDir>
-    <LinkIncremental>false</LinkIncremental>
-  </PropertyGroup>
   <ItemDefinitionGroup>
     <ClCompile>
       <Optimization>MaxSpeed</Optimization>

PCbuild/x64.props

@@ -3,12 +3,6 @@
   <PropertyGroup Label="UserMacros" Condition="'$(HOST_PYTHON)'!=''">
     <PythonExe>$(HOST_PYTHON)</PythonExe>
   </PropertyGroup>
-  <PropertyGroup>
-    <_ProjectFileVersion>10.0.30319.1</_ProjectFileVersion>
-    <_PropertySheetDisplayName>amd64</_PropertySheetDisplayName>
-    <OutDir>$(SolutionDir)amd64\</OutDir>
-    <IntDir>$(SolutionDir)$(PlatformName)-temp-$(Configuration)\$(ProjectName)\</IntDir>
-  </PropertyGroup>
   <ItemDefinitionGroup>
     <ClCompile>
       <AdditionalOptions>/USECL:MS_OPTERON /GS- %(AdditionalOptions)</AdditionalOptions>

Tools/buildbot/build-amd64.bat

 @rem Used by the buildbot "compile" step.
-set HOST_PYTHON=%CD%\PCbuild\amd64\python_d.exe
 cmd /c Tools\buildbot\external-amd64.bat
 call "%VS100COMNTOOLS%\..\..\VC\vcvarsall.bat" x86_amd64
 cmd /c Tools\buildbot\clean-amd64.bat