Squashed 'sglib/' changes from 4d3ac10..367c793

367c793 Fixed path generation to use the builtin fullfile function.
6fd63ab Added documentation and example for memstats.
ae5bf17 Fixed example for getpid function.
ba68075 Nicer output of polynomials in help for polysys_rc2coeffs

git-subtree-dir: sglib
git-subtree-split: 367c79331be164c209018201d84127cb533ee60d
Merge commit '1f106811e785d91ac48f079a92b84e2afdb06e57'
a lot of cleanup
some more cleanup