6.1 change log


git-svn-id: svn://svn.code.sf.net/p/qwt/code/branches/qwt-6.1@2033 29e17f8d-cf37-471e-a288-72cc03a76eda
qwtconfig.pri prepared for 6.1.1 tagging


git-svn-id: svn://svn.code.sf.net/p/qwt/code/branches/qwt-6.1@2034 29e17f8d-cf37-471e-a288-72cc03a76eda
version number increased to 6.1.2


git-svn-id: svn://svn.code.sf.net/p/qwt/code/branches/qwt-6.1@2036 29e17f8d-cf37-471e-a288-72cc03a76eda