Squashed 'sglib/' changes from c2c1f15..90f462c

90f462c Lots of cleanup of minor details (reports ...) in linalg
37fe3bd Better tests and algo for Khatri-Rao product
18147f1 [wip] cleanup and sorting in tensor and linalg
594e29b Renamed, modified and tested SVD type and add methods
8bc2522 Added tensor_operator_create method and unittest
71decd1 Added function to create tensor operators
991e45a Added a todo and reference to interpolatory_weights
ac5601c Improved performance and comments in tensor_add
d5f4f70 [wip] Cleanup of tensor methods
2aef62d Added rand_seed to get rid of the warnings (and encapsule bad stuff)...
f5a95bd Additional unittest for polysys_sqnorm
89e3995 Added gpc_combine_inputs function
1b535d0 Better coverage for some quadrature methods
dbdbb10 Examples can now end with a Note section in run_example
8d1b949 Added Fejer rules to Clenshaw-Curtis methods
109ab2b Wrote some help for the gauss_legendre_triangle_rule function and made it faster.
96191f1 Fixed some issues with shape of integration nodes and weights
4170198 Fixed the shape of x and w in polysys_int_rule
6755a74 Added some basic quadrature functions (Newton-Cotes, interval shifting, weights)
a87e4d3 Better error reporting for options framework
44e1a5f Added 'newlines' option to function underline
b7f3e7d Corrections in the help for the gpc functions
edff3ce Improved performance of simplefem functions
98ed6c5 Fixed some minor issues in the function help secionts (especially unittests)
690c2c0 Fixed some minor issues in munit
7625d0f Improved help text for munit framework

git-subtree-dir: sglib
git-subtree-split: 90f462cb09b37a23b9f643caaba7d8dc10f46996
Merge commit '330a44b9f30eb8bb2489879e12f282bb06872a53'