Added more noise-free test functions in CLOP

Fixed dimensional bugs in clopangle.m and clopstep.m. Added minimum
function value information in noise-free functions. Added more functions
in illustrate_clop.functions.m.
Determined minimum value of 5D log function
Evaluated performance of CMA-ES on 5D cloplog

Modified testnoiseoptimization.m to evaluate the performance of the
modified UH-CMA-ES on 5-dimensional LOG function for M=1e7 over 10
independent runs.
New excel file to record solution errors in CLOP
Modified output of cmaesshell.m

Defined out.bestever.xmin and out.bestever.fmin in the output of
cmaesshell.m