Setup does not work for Unix-based OS

[Jonas-Nicodemus]

Running setup_morph.m does not work for Unix-based operating systems because the paths are hardcoded with "\" es separtor:

MORpH/setup_morph.m

Lines 66 to 67 in a0fe436

	%% Third-party Software Download and Installation
	cd(strcat(morph_path,"\src\thirdParty\external\"))

For Unix-based operating systems, it must be "/".
I suspect that the correct way to create path strings in MATLAB is to use the fullfile function.

There are many more paths in this script, and perhaps throughout the project, for which the fullfile function should be used instead of strcat.