Driver: Sink Driver/Compilation into clang::driver namespace.
 - Add OptTable instance to Driver.

llvm-svn: 66063
diff --git a/clang/tools/driver/driver.cpp b/clang/tools/driver/driver.cpp
index ac739bf..31990a8 100644
--- a/clang/tools/driver/driver.cpp
+++ b/clang/tools/driver/driver.cpp
@@ -19,7 +19,7 @@
 
 #include "llvm/ADT/OwningPtr.h"
 #include "llvm/System/Signals.h"
-using namespace clang;
+using namespace clang::driver;
 
 int main(int argc, const char **argv) {
   llvm::sys::PrintStackTraceOnErrorSignal();