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/aos/events/logging/single_node_merge.cc b/aos/events/logging/single_node_merge.cc
index ec22b82..cc78c2b 100644
--- a/aos/events/logging/single_node_merge.cc
+++ b/aos/events/logging/single_node_merge.cc
@@ -2,11 +2,12 @@
 #include <string>
 #include <vector>
 
+#include "gflags/gflags.h"
+
 #include "aos/events/logging/logfile_sorting.h"
 #include "aos/events/logging/logfile_utils.h"
 #include "aos/init.h"
 #include "aos/network/multinode_timestamp_filter.h"
-#include "gflags/gflags.h"
 
 // This is a simple application to match up data with timestamps for a node in a
 // log.  It doesn't solve the timestamp problem, but is still quite useful for