Copy clang/Driver/<Option parsing stuff> to llvm.

llvm-svn: 169344
diff --git a/llvm/lib/CMakeLists.txt b/llvm/lib/CMakeLists.txt
index fb63c63..c65d496 100644
--- a/llvm/lib/CMakeLists.txt
+++ b/llvm/lib/CMakeLists.txt
@@ -8,6 +8,7 @@
 add_subdirectory(Analysis)
 add_subdirectory(MC)
 add_subdirectory(Object)
+add_subdirectory(Option)
 add_subdirectory(DebugInfo)
 add_subdirectory(ExecutionEngine)
 add_subdirectory(Target)