class LevMarqSparse is not tagged CV_EXPORTS, 
so the contrib module,  built the on win using vs won't contain that symbol,
trying to create an instance of LevMarqSparse will lead to a 'undefined symbol' err, because it did not make it into the library. 

rename Octave -> SoftCascadeOctave

in the same way as Dallar's matlab toolbox does

according to Piotr Dollar paper

- parse idl
- replase option parser with argument parser