Re-add clang-format tests to clang/test.

Also now use -strict-whitespace as the tests are confusing otherwise.

llvm-svn: 177853
diff --git a/clang/test/Format/basic.cpp b/clang/test/Format/basic.cpp
new file mode 100644
index 0000000..375bbd2
--- /dev/null
+++ b/clang/test/Format/basic.cpp
@@ -0,0 +1,6 @@
+// RUN: grep -Ev "// *[A-Z-]+:" %s > %t.cpp
+// RUN: clang-format -i %t.cpp
+// RUN: FileCheck -strict-whitespace -input-file=%t.cpp %s
+
+// CHECK: {{^int\ \*i;}}
+ int   *  i  ;