Add a clang-format configuration and reformat C code (#261)

* Add a clang-format configuration and reformat C code

From my testing it turns out the built-in WebKit style is the closest to
the current style. I added a few config options to further reduce the
diff and I think the current output looks reasonable.
In the future it would be good to add a CI and pre-commit check to enforce
that all C code is consistently formatted to reduce the need for reviewers
to look for formatting issues.

* Fix formatting of commented-out reservation debug code

Use an empty-by-default macro instead of commented-out fprintf calls.
This way clang-format can format the calls sensibly and it's easier
to enable the debug prints.

* Improve formatting of fprintf call in set_config_print()

Clang-format does not like long string literals, so split this manually
to format the call sensibly.

* Fix formatting of function pointer typedef

Clang-format gets this wrong `*` is part of the typedef.

* Improve formatting of getopt_long call

* Fix odd fprintf continuation by splitting long string literal

0 files changed, 0 insertions, 0 deletions