updated for version 7.3.1308
Problem:    Typos in MS-Windows build settings and README.
Solution:   Minor changes to MS-Windows files.
diff --git a/src/msvc2010.bat b/src/msvc2010.bat
index d9fc6c0..5c258e9 100644
--- a/src/msvc2010.bat
+++ b/src/msvc2010.bat
@@ -4,4 +4,4 @@
 rem See INSTALLpc.txt for information.
 @echo on
 
-call "%VS100COMNTOOLS%%vsvars32.bat"
+call "%VS100COMNTOOLS%vsvars32.bat"