clang/CMakeLists.txt: Move "examples" after building lib and tools.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@160848 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 29661fc..de85806 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -250,14 +250,14 @@
 
 add_subdirectory(utils/TableGen)
 
-option(CLANG_BUILD_EXAMPLES "Build CLANG example programs by default." OFF)
-add_subdirectory(examples)
-
 add_subdirectory(include)
 add_subdirectory(lib)
 add_subdirectory(tools)
 add_subdirectory(runtime)
 
+option(CLANG_BUILD_EXAMPLES "Build CLANG example programs by default." OFF)
+add_subdirectory(examples)
+
 # TODO: docs.
 add_subdirectory(test)