[UPD] FindOctave: Octave built with MSVC 2010 does not have the prefix "lib" for its libraries (octinterp, octave, and cruft).
First Travis build failed… The script seems wrong but Lint said it was ok ...
[UPD] By default Octave installer want to install the software in C:/Software/Octave-x.y.z. Try to find Octave in this path too.