Driver: Add majority of driver-driver implementation.
 - Compare to driverdriver.c if bored; not completely fair since the
   driver gets a bit more code in other places to handle binding archs
   (for Xarch) but not completely unfair either.

Fear not, extra Action classes will have a happy home for their
vtables soon.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@66817 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Driver/Action.cpp b/lib/Driver/Action.cpp
new file mode 100644
index 0000000..d9bfce1
--- /dev/null
+++ b/lib/Driver/Action.cpp
@@ -0,0 +1,15 @@
+//===--- Action.cpp - Abstract compilation steps ------------------------*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang/Driver/Action.h"
+
+#include <cassert>
+using namespace clang::driver;
+
+Action::~Action() {}