Extend build_ssl to Win64, using VSExtComp.
diff --git a/PCbuild/readme.txt b/PCbuild/readme.txt
index 46c3dde..d333d28 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. The project files require atleast version 0.8.
+accordingly. The project files require atleast version 0.9.
Building for AMD64
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