[O] Booktabs in new LaTeX exporter

[RCY]

I am trying to use the booktabs package for tables in the new exporter, however I am unable to get \toprule, etc instead of \hrule

I would appreciate any suggestions to fix this. 

As a minimal example, I started emacs -q, and evaluated the following:

   (setq org-install-dir "~/.emacs.d/src/org-mode")

   (add-to-list 'load-path (concat org-install-dir "/contrib/lisp"))

   (add-to-list 'load-path (concat org-install-dir "/lisp"))

   (require 'org-e-latex)

   (add-to-list 'org-e-latex-classes

   '("article"

   "\\documentclass[11pt]{article}

   \[DEFAULT-PACKAGES]

   \[PACKAGES]

   \[EXTRA]"

   ("\\section{%s}" . "\\section*{%s}")

   ("\\subsection{%s}" . "\\subsection*{%s}")

   ("\\subsubsection{%s}" . "\\subsubsection*{%s}")))

-----org.file-----------

#+LATEX_CLASS: article

#+LATEX_HEADER: \usepackage{booktabs}

* Test

#+ATTR_LATEX: :booktabs

#+CAPTION: Test table

 |----+----|

 | 1  | 2 |

 |----+----|

 | A1 | A2 |

 | B1 | B2 |

 | C1 | C2 |

 |----+----|

------latex-buffer from org-export-latex-as-buffer-------

% Created 2012-12-27 Thu 18:44

\documentclass[11pt]{article}

\usepackage[utf8]{inputenc}

\usepackage[T1]{fontenc}

\usepackage{fixltx2e}

\usepackage{graphicx}

\usepackage{longtable}

\usepackage{float}

\usepackage{wrapfig}

\usepackage{soul}

\usepackage{textcomp}

\usepackage{marvosym}

\usepackage{wasysym}

\usepackage{latexsym}

\usepackage{amssymb}

\usepackage{hyperref}

\tolerance=1000

\usepackage{booktabs}

\providecommand{\alert}[1]{\textbf{#1}}

\title{tst}

\author{RC}

\date{\today}

\hypersetup{

  pdfkeywords={},

  pdfsubject={},

  pdfcreator={Emacs Org-mode version 7.9.2+}}

\begin{document}

\maketitle

\setcounter{tocdepth}{3}

\tableofcontents

\vspace*{1cm}

\section{Test}

\label{sec-1}

\begin{table}[htb]

\caption{Test table} 

\begin{center}

\begin{tabular}{ll}

\hline

 1   &  2   \\

\hline

 A1  &  A2  \\

 B1  &  B2  \\

 C1  &  C2  \\

\hline

\end{tabular}

\end{center}

\end{table}

\end{document}