* lisp/ox-latex.el: New `org-latex--align-string-tabbing',
`org-table--org-tabbing' functions. Modified `org-latex-table-cell' to
use optional tabbing delimiters.
* etc/ORG-NEWS: support in ox-latex for tabbing environment.
* doc/org-manual.org: mention support for new environment.
Created-by: Bob Vergauwen <emacs@vergauwen.me>