RF: Fix matlab startup.m creation
This MR proposes two changes to the default FSL MATLAB configuration:
-
The default MATLAB userpath is
~/Documents/MATLAB/
on both macOS and Linux (https://www.mathworks.com/help/matlab/ref/userpath.html), but the installer creates/edits~/matlab/startup.m
. -
Many FSL commands will not work if the
FSLOUTPUTTYPE
environment variable is not set, so this has been added to the defaultstartup.m
contents