hue color map added


git-svn-id: svn://svn.code.sf.net/p/qwt/code/branches/qwt-6.1-multiaxes@2075 29e17f8d-cf37-471e-a288-72cc03a76eda
realtime example - scrollzoomer fixed


git-svn-id: svn://svn.code.sf.net/p/qwt/code/branches/qwt-6.1-multiaxes@2078 29e17f8d-cf37-471e-a288-72cc03a76eda
pointless constructor declaration removed


git-svn-id: svn://svn.code.sf.net/p/qwt/code/branches/qwt-6.1-multiaxes@2080 29e17f8d-cf37-471e-a288-72cc03a76eda