convert "labels", "iters", and "params" to easier-to-specify option strings


git-svn-id: svn+ssh://svn.mystic.cacr.caltech.edu/mystic/mystic@744 968178ea-60bd-409e-af13-df8a517b6005
"better" formatting of commandline parsing option strings for plotting scripts


git-svn-id: svn+ssh://svn.mystic.cacr.caltech.edu/mystic/mystic@745 968178ea-60bd-409e-af13-df8a517b6005
Merge branch 'master' of https://github.com/uqfoundation/mystic