Revise C++ coding style using clang-format

Run the `Utilities/Scripts/clang-format.bash` script to update
all our C++ code to a new style defined by `.clang-format`.
Use `clang-format` version 3.8.

* If you reached this commit for a line in `git blame`, re-run the blame
  operation starting at the parent of this commit to see older history
  for the content.

* See the parent commit for instructions to rebase a change across this
  style transition commit.

Tests/CompileFeatures/cxx_reference_qualified_functions.cpp

@@ -1,11 +1,13 @@
 
-struct test{
-  void f() & { }
-  void f() && { }
+struct test
+{
+  void f() & {}
+  void f() && {}
 };
 
-void someFunc(){
+void someFunc()
+{
   test t;
-  t.f(); // lvalue
+  t.f();      // lvalue
   test().f(); // rvalue
 }