Sparse matrices:  - bug fix for setdiag;  - moved setdiag to spmatrix base class;  - improved lil_matrix.__setitem__ slicing
Sparse matrices:
 - bug fix for setdiag;
 - moved setdiag to spmatrix base class;
 - improved lil_matrix.__setitem__ slicing


git-svn-id: 003f22d385e25de9cff933a5ea4efd77cb5e7b28@1894 d6536bca-fef9-0310-8506-e4c0a848fbcf

scipy/scipy-svn,lesserwhirls/scipy-cwt,jasonmccampbell/scipy-refactor,scipy/scipy-svn,lesserwhirls/scipy-cwt,jasonmccampbell/scipy-refactor,jasonmccampbell/scipy-refactor,lesserwhirls/scipy-cwt,scipy/scipy-svn,jasonmccampbell/scipy-refactor,lesserwhirls/scipy-cwt,scipy/scipy-svn