Additional changes to the property sheets in PCBuild8.  Visual Studio doesn's save those when it builds, unlike the .vcproj files, so I chekced in out-of-date versions.
diff --git a/PCbuild8/pyd.vsprops b/PCbuild8/pyd.vsprops
index afbfb50..77235ac 100644
--- a/PCbuild8/pyd.vsprops
+++ b/PCbuild8/pyd.vsprops
@@ -8,6 +8,7 @@
 	<Tool

 		Name="VCLinkerTool"

 		OutputFile="$(OutDir)\$(ProjectName).pyd"

+		LinkIncremental="1"

 		ImportLibrary="$(IntDir)\$(TargetName).lib"

 	/>

 </VisualStudioPropertySheet>