A command link button wraps a native MSW control under recent Windows versions
and is implemented generically as a simple bitmap button elsewhere.
In the future, GTK implementation should allow using a different font for the
button label and its note.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@65327 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
