Rename lib/Driver (etc) to lib/Frontend in prep for the *actual*
driver taking lib/Driver.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65811 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/Driver/DiagChecker.cpp b/Driver/DiagChecker.cpp
index 346d9e0..e5be10a 100644
--- a/Driver/DiagChecker.cpp
+++ b/Driver/DiagChecker.cpp
@@ -13,7 +13,7 @@
 
 #include "clang.h"
 #include "ASTConsumers.h"
-#include "clang/Driver/TextDiagnosticBuffer.h"
+#include "clang/Frontend/TextDiagnosticBuffer.h"
 #include "clang/Sema/ParseAST.h"
 #include "clang/AST/ASTConsumer.h"
 #include "clang/Basic/SourceManager.h"