Add build support for _elementtree on Windows.
diff --git a/PCbuild/pcbuild.sln b/PCbuild/pcbuild.sln
index 37f2621..7dbdcce 100644
--- a/PCbuild/pcbuild.sln
+++ b/PCbuild/pcbuild.sln
@@ -79,6 +79,10 @@
 		{CF7AC3D1-E2DF-41D2-BEA6-1E2556CDEA26} = {CF7AC3D1-E2DF-41D2-BEA6-1E2556CDEA26}

 	EndProjectSection

 EndProject

+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "_elementtree", "_elementtree.vcproj", "{1966DDE2-4AB7-4E4E-ACC9-C121E4D37F8E}"

+	ProjectSection(ProjectDependencies) = postProject

+	EndProjectSection

+EndProject

 Global

 	GlobalSection(SolutionConfiguration) = preSolution

 		Debug = Debug

@@ -181,6 +185,12 @@
 		{680CDC79-9CCA-4282-9A8D-927CB0DB55B2}.Release.Build.0 = Release|Win32

 		{680CDC79-9CCA-4282-9A8D-927CB0DB55B2}.ReleaseItanium.ActiveCfg = ReleaseItanium|Win32

 		{680CDC79-9CCA-4282-9A8D-927CB0DB55B2}.ReleaseItanium.Build.0 = ReleaseItanium|Win32

+		{1966DDE2-4AB7-4E4E-ACC9-C121E4D37F8E}.Debug.ActiveCfg = Debug|Win32

+		{1966DDE2-4AB7-4E4E-ACC9-C121E4D37F8E}.Debug.Build.0 = Debug|Win32

+		{1966DDE2-4AB7-4E4E-ACC9-C121E4D37F8E}.Release.ActiveCfg = Release|Win32

+		{1966DDE2-4AB7-4E4E-ACC9-C121E4D37F8E}.Release.Build.0 = Release|Win32

+		{1966DDE2-4AB7-4E4E-ACC9-C121E4D37F8E}.ReleaseItanium.ActiveCfg = ReleaseItanium|Win32

+		{1966DDE2-4AB7-4E4E-ACC9-C121E4D37F8E}.ReleaseItanium.Build.0 = ReleaseItanium|Win32

 	EndGlobalSection

 	GlobalSection(SolutionItems) = postSolution

 		readme.txt = readme.txt