Squashed 'sglib/' changes from c75b7fc..4e27f3d

4e27f3d FIX added gpcbasis_evaluate that I forgot to add in when renaming the methods!!
bc1d2ba Deleted demo directory
6e6455c Deleted thesis subdirectory from sglib

git-subtree-dir: sglib
git-subtree-split: 4e27f3d2c79a25a2f068f04845322b49b2027496
Merge commit '60fd6810bb6067d2349a526e2978873c9126323a'