QwtSplineLocal using templates


git-svn-id: svn://svn.code.sf.net/p/qwt/code/trunk@1945 29e17f8d-cf37-471e-a288-72cc03a76eda
spline code from qwt_bezier.cpp converted into a G1 continous spline (
as QwtSplinePleasing )


git-svn-id: svn://svn.code.sf.net/p/qwt/code/trunk@1946 29e17f8d-cf37-471e-a288-72cc03a76eda
pleasing spline again


git-svn-id: svn://svn.code.sf.net/p/qwt/code/trunk@1947 29e17f8d-cf37-471e-a288-72cc03a76eda