[docs] [issue29688] Add support for Path.absolute()

Brett Cannon added the comment: "What's the rationale for not calling self._flavour.pathmod.abspath() to implement absolute()?" Beats me. :) It's just how Antoine wrote it and that's all I know. ---------- _______________________________________ Python tracker <report@bugs.python.org> <http://bugs.python.org/issue29688> _______________________________________