Upgrade to vsextcomp 0.8 (and thus the SDK for W2k3SP1)
diff --git a/PCbuild/readme.txt b/PCbuild/readme.txt
index 6db30af..f6c8bf7 100644
--- a/PCbuild/readme.txt
+++ b/PCbuild/readme.txt
@@ -264,7 +264,7 @@
In addition, you need the Visual Studio plugin for external C compilers,
from http://sf.net/projects/vsextcomp. The plugin will wrap cl.exe, to
locate the proper target compiler, and convert compiler options
-accordingly.
+accordingly. The project files require atleast version 0.8.
Building for AMD64
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