Updated to Clang 3.5a.

Change-Id: I8127eb568f674c2e72635b639a3295381fe8af82
diff --git a/unittests/CMakeLists.txt b/unittests/CMakeLists.txt
index 479b36f..cc13226 100644
--- a/unittests/CMakeLists.txt
+++ b/unittests/CMakeLists.txt
@@ -11,6 +11,7 @@
 
 add_subdirectory(Basic)
 add_subdirectory(Lex)
+add_subdirectory(Driver)
 if(CLANG_ENABLE_STATIC_ANALYZER)
   add_subdirectory(Frontend)
 endif()
@@ -21,3 +22,6 @@
   add_subdirectory(Format)
   add_subdirectory(Sema)
 endif()
+if(NOT WIN32) # FIXME:Investigating.
+  add_subdirectory(libclang)
+endif()