The new class is fully Doxygen-documented.
Added an example program (example/shapedwindow.cxx) that exercises the new class.
Modified all IDE-supporting files accordingly.
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@10255 ea41ed52-d2ee-0310-a9c1-e6b18d33e121