DEVAL bug when used with MCR

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There's a bug in the implementation of RKN1210's deval() function. If users are running the code from the MATLAB Compiler Runtime (MCR) environment, line 52 of the original function will fail because the MCR uses a slightly different path structure for the MATLAB implementation of deval. That line needs to be changed to read something like this:

        try
            cd(fullfile(matlabroot, 'toolbox', 'matlab','funfun')); %works if running MATLAB normally
        catch
            cd(fullfile(matlabroot, 'mcr', 'toolbox', 'matlab','funfun')); %works if running MATLAB via MCR: mcr\toolbox\matlab\funfun
        end

You could also replace the try/catch with a test for deployment (isdeployed()).