splines again


git-svn-id: svn://svn.code.sf.net/p/qwt/code/trunk@1896 29e17f8d-cf37-471e-a288-72cc03a76eda
splines again


git-svn-id: svn://svn.code.sf.net/p/qwt/code/trunk@1897 29e17f8d-cf37-471e-a288-72cc03a76eda
splineeditor fixed


git-svn-id: svn://svn.code.sf.net/p/qwt/code/trunk@1898 29e17f8d-cf37-471e-a288-72cc03a76eda