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.

Utilities/cm_jsoncpp_reader.h

@@ -15,9 +15,9 @@
 /* Use the jsoncpp library configured for CMake.  */
 #include "cmThirdParty.h"
 #ifdef CMAKE_USE_SYSTEM_JSONCPP
-# include <json/reader.h>
+#include <json/reader.h>
 #else
-# include <cmjsoncpp/include/json/reader.h>
+#include <cmjsoncpp/include/json/reader.h>
 #endif
 
 #endif