Add ability to use arbitrary basis function to Rbf constructor for radial basis function interpolation.
Add ability to use arbitrary basis function to Rbf constructor for radial basis function interpolation.

git-svn-id: 003f22d385e25de9cff933a5ea4efd77cb5e7b28@6215 d6536bca-fef9-0310-8506-e4c0a848fbcf

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