Squashed 'sglib/' changes from 4d3ac10..5b2bf65

5b2bf65 Fixed Contents.m for simplefem plus some aesthetic issues
c4ae1b7 Cleanup of fem/simplefem and related functions
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: 5b2bf65a95c8cf7bfa98e6c12687ad5bcf390b75
Merge commit '4843146b939b0ca33d91a5c225ff95b6f6a44ff2'
Moved and improved pde toolbox functions

Added mass matrix, removed ptdata struct, moved to fem/pdetool
Fixed a bug introduced by "performance hints"
Added necessary paths to sglib-thesis path
Some fixes (projector and pde toolbox)