added wxGrid::UseNativeColHeader() (column reordering doesn't work yet); more wxGrid clean up: refactor Init/InitVars/Create
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@57259 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in: