Use vc-switches on vc-*-annotate-command

Use vc-switches on vc-*-annotate-command

This also removes switch "-C -C" from vc-git-annotate-command.

Fixes: debbugs:17945
* vc/vc.el (vc-annotate-switches): New defcustom.
* vc/vc-bzr.el (vc-bzr-annotate-switches): New defcustom.
(vc-bzr-annotate-command): Use it.
* vc/vc-cvs.el (vc-cvs-annotate-switches): New defcustom.
(vc-cvs-annotate-command): Use it.
* vc/vc-git.el (vc-git-annotate-switches): New defcustom.
(vc-git-annotate-command): Use it.
* vc/vc-hg.el (vc-hg-annotate-switches): New defcustom.
(vc-hg-annotate-command): Use it.
* vc/vc-mtn.el (vc-mtn-annotate-switches): New defcustom.
(vc-mtn-annotate-command): Use it.
* vc/vc-svn.el (vc-svn-annotate-switches): New defcustom.
(vc-svn-annotate-command): Use it.