Revise C++ coding style using clang-format

Run the `clang-format.bash` script to update all our C and 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.

Change-Id: Ie3aedc03bfe5c3999d4a077fafb8c6f3bbffc5c5