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

Serhiy Storchaka added the comment: posixpath.abspath() collapses "<path>/<symlink>/.." to "<path>", this is not correct. Not sure about ntpath.abspath(). ---------- nosy: +serhiy.storchaka _______________________________________ Python tracker <report@bugs.python.org> <http://bugs.python.org/issue29688> _______________________________________