The client data is supposed to be untyped, there is really no reason (other
than compatibility with C conventions of 40 years ago) to use char** here.
So don't do it and provide the versions taking "void**" keeping "char**" ones
for backwards compatibility only.
Also deprecate GetSelectionClientData() that returned char* and add a new
GetSelectionData() returning void* instead.
Closes#13876.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@70514 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Use "wxWindows licence" and not "wxWidgets licence" (the latter doesn't
exist) and consistently spell "licence" using British spelling.
See #12165.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@64940 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
