Octave: disable documentation by default.

Documentation requires a LaTeX system.

Closes #1592.

Signed-off-by: Dominique Orban <dominique.orban@gmail.com>
octave: add 3.8.1_1 bottle.
Octave: Relocate bottle block.
trinity r20131110: Add needs :openmp
trinity: add r20131110 bottle.