Add files added by recent patches.
diff --git a/src/msvc2010.bat b/src/msvc2010.bat
new file mode 100644
index 0000000..d9fc6c0
--- /dev/null
+++ b/src/msvc2010.bat
@@ -0,0 +1,7 @@
+@echo off
+rem To be used on MS-Windows for Visual C++ 2010 Express Edition
+rem   aka Microsoft Visual Studio 10.0.
+rem See INSTALLpc.txt for information.
+@echo on
+
+call "%VS100COMNTOOLS%%vsvars32.bat"