clang-format: [Java] Support Foo.class;

Before:
  SomeClass.
  class.getName();

After:
  SomeClass.class.getName();

This fixes llvm.org/PR21665.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@222813 91177308-0d34-0410-b5e6-96231b3b80d8