New Function, splinefit.m * __splinefit__.m: New private file. Jonas Lundgren's splinefit.m with BSD License. Jonas emailed this version to Octave's developers. * splinefit.m: New File. Piece-wise polynomial fit. This is a wrapper for __splinefit__.m. The wrapper allows for Octave's tex-info documentation, demos, and tests to be added. In addition the input syntax has been sligtly modified to allow new options to be added without breaking compatiblity. * doc/splineimages.m: New file to produce splineimages<#> for the docs. * doc/images: Include splineimages.m and the figues for the docs. * scripts/polynomial/module.mk: Add new files. * doc/interpreter/poly.txi: Minimal description of splinefit.