Run clang-format on the entire repo

This patch clang-formats the entire repo. Third-party code is
excluded.

I needed to fix up the .clang-format file so that all the header
includes are ordered properly. I could have sworn that it used to work
without the extra modification, but I guess not.

Signed-off-by: Philipp Schrader <philipp.schrader@gmail.com>
Change-Id: I64bb9f2c795401393f9dfe2fefc4f04cb36b52f6
diff --git a/frc971/wpilib/ahal/RobotBase.cc b/frc971/wpilib/ahal/RobotBase.cc
index 3cc39df..3640191 100644
--- a/frc971/wpilib/ahal/RobotBase.cc
+++ b/frc971/wpilib/ahal/RobotBase.cc
@@ -9,9 +9,9 @@
 
 #include <cstdio>
 
-#include "hal/HAL.h"
 #include "frc971/wpilib/ahal/DriverStation.h"
 #include "frc971/wpilib/ahal/WPILibVersion.h"
+#include "hal/HAL.h"
 
 using namespace frc;