Rebaked test GUI projects with toplevel.cpp included.

Rebaked test GUI projects with toplevel.cpp included.

Added toplevel.cpp to GUI test projects and removed the test suite from the unnamed registry so that by default its tests don't run (some regarding ShowWithoutActivating are failing). This way at least the source file has more of a chance to be in a compilable state (compilation was broken). toplevel.cpp has never been included in a project since its addition in r62508 ("[...] until the mainloop issues are resolved [...]").

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@67657 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775