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/buffered_solenoid.cc b/frc971/wpilib/buffered_solenoid.cc
index c07a7cd..a4b337e 100644
--- a/frc971/wpilib/buffered_solenoid.cc
+++ b/frc971/wpilib/buffered_solenoid.cc
@@ -5,9 +5,7 @@
 namespace frc971 {
 namespace wpilib {
 
-void BufferedSolenoid::Set(bool value) {
-  pcm_->DoSet(number_, value);
-}
+void BufferedSolenoid::Set(bool value) { pcm_->DoSet(number_, value); }
 
 }  // namespace wpilib
 }  // namespace frc971