Hello,

The following patch implements radio tables and `orgtbl-to-...'
functions using Org export engine. The implementation is probably not
totally backward compatible, though.

In particular, I suppressed :remove-nil-lines parameter, as I couldn't
make any sense out of it. If someone has a clear definition of its job,
and if that job is useful, I could implement it back.

Also, process does not dynamically bind `org-table-last-alignment' and
`org-table-last-column-widths' anymore. It should be possible to have
them back with some computations before starting the conversion, but,
unless they are vital, I'd rather not do it. `orgtbl-to-generic' is
tricky enough.

OTOH, I added :raw parameter, which allows to treat cells as strings and
not as Org syntax.

  #+ORGTBL: SEND ... :raw nil
  | *a* |

=>

  ...
  \textbf{a}
  ...

  #+ORGTBL: SEND ... :raw t
  | *a* |

=>

  ...
  *a*
  ...

I also added some specific parameters to translation functions,
e.g. :booktabs or :environment for `orgtbl-to-latex'. See docstring for
more information.

The patch comes with a test suite. However, it is no real use case.
Therefore, I'd appreciate some human testing before going further.

Feedback welcome.


Regards,

-- 
Nicolas Goaziou                                                0x80A93738