prepare-Changelog and svn-create-patch should optionally run check-webkit-style.

prepare-Changelog and svn-create-patch should optionally run check-webkit-style.
https://bugs.webkit.org/show_bug.cgi?id=131115

Reviewed by Daniel Bates.

Added [--[no-]style] param to run check-webkit-style as part of prepare-Changelog and svn-create-patch.

* Scripts/commit-log-editor: Added --no-style.
* Scripts/prepare-ChangeLog: Primary patch.
(main): Primary patch.
(createPatchCommand): Added --no-style.
* Scripts/svn-create-patch: Primary patch.
* Scripts/webkit-tools-completion.sh: Added --style and --no-style.
* Scripts/webkitpy/common/checkout/scm/svn.py: Added --no-style.
(SVN.create_patch): Added --no-style.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@167751 268f45cc-cd09-0410-ab3c-d52691b4dbfc