It's really annoying to deal with parameter/argument conflicts. This is even frustrating when we merge code from the community to Ant's internal code base with hundreds of conflicts caused by parameters/arguments.
In this PR, I updated the clang-format style to make parameters/arguments stay on different lines if they can't fit into a single line.
There are several benefits:
* Conflict resolving is easier.
* Less potential human mistakes when resolving conflicts.
* Git history and Git blame are more straightforward.
* Better readability.
* Align with the new Python format style.
* Remove hiredis submodule.
* Squashed 'src/common/thirdparty/hiredis/' content from commit acd1966
git-subtree-dir: src/common/thirdparty/hiredis
git-subtree-split: acd1966bf7f5e1be74b426272635c672def78779
* Make Plasma tests pass.
* Make Photon tests pass.
* Compile and test with Travis.
* Deactive fetch test so that the tests pass.
