2dd27db859
[READY] Normalize buffer filepath
On Windows, Vim returns buffer filepaths with forward slashes instead of backward ones if [the `shellslash` option](http://vimdoc.sourceforge.net/htmldoc/options.html#'shellslash') is set. Since the server always return paths with backslashes on that platform, [the paths comparison in `JumpToLocation`](e8e144d446/python/ycm/vimsupport.py (L409)
) will incorrectly return `True` for two equivalent paths. We need to normalize the paths from Vim.
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