* threebar.cc (ThreeBarProgressPage::ins_dialog): Move variable to more

* threebar.cc (ThreeBarProgressPage::ins_dialog): Move variable to more
appropriate class.
(ThreeBarProgressPage::MaximizeDialog): Move function to more appropriate
class.
(ThreeBarProgressPage::OnMessageApp): Remove MaximizeDialog calls.
* threebar.h: Remove maximize handling.
* choose.cc (ChooserPage::ins_dialog): New variable.
(ChooserPage::MaximizeDialog): New function.
(ChooserPage::ChooserPage): Remove unneeded handling of nCmdShow.
(ChooserPage::OnActivate): Maximize chooser page via MaximizeDialog.
(ChooserPage::OnNext): Revert chooser page to normal before returning.
* main.cc (main): Don't pass cmd_show to ChooserPage.
* propsheet.cc (PropSheetProc): Accommodate change in class for SetHwndDialog.