[O] position option of tabular in latex export

[Julien Cubizolles]

Is it possible to specify a pos option to the tabular environment used
when exporting a table in latex. Some problems I have with tabular in
block environments (when exporting to beamer) would be fixed with:

--8<---------------cut here---------------start------------->8---
\begin{tabular}[t]{ll}
\hline
item & item
\hline
\end{tabular}--8<---------------cut here---------------end--------------->8---

instead of:

--8<---------------cut here---------------start------------->8---
\begin{tabular}{ll}
\hline
item & item
\hline
\end{tabular}
--8<---------------cut here---------------end--------------->8---

Julien.