[Orgmode] [BUG] LaTeX exporter should honor empty lines

[Nicolas Girard]

The following test file

#===
- A0
- B0
C0

- A1
- B1

  C1

- A2
- B2

C2

- A3
- B3


C3
#===

translates into

%===
\begin{itemize}
\item B0
\end{itemize}
C0

\begin{itemize}
\item A1
\item B1

  C1
\item A2
\item B2
\end{itemize}
C2

\begin{itemize}
\item A3
\item B3
\end{itemize}
C3
%===

While the output for C0 and C1 is correct, the following is expected
for C2 and C3:

%===
\item A2
\item B2
\end{itemize}

C2

\begin{itemize}
\item A3
\item B3
\end{itemize}


C3
%===

( I tried to fix this for a while but gave up, sorry :-/ )

-- 
Nicolas