Provide support for retaining the version number found in a config file.

llvm-svn: 15995
diff --git a/llvm/tools/llvmc/CompilerDriver.h b/llvm/tools/llvmc/CompilerDriver.h
index 4b825e2..e5bf42f 100644
--- a/llvm/tools/llvmc/CompilerDriver.h
+++ b/llvm/tools/llvmc/CompilerDriver.h
@@ -89,6 +89,7 @@
 
       struct ConfigData {
         ConfigData();
+        std::string version;    ///< The version number.
         std::string langName;   ///< The name of the source language 
         StringTable opts;       ///< The o10n options for each level
         Action PreProcessor;    ///< PreProcessor command line