bug #5589. Selection area is now calculated using the inherited Reflow rather
than using the calculations used for the native listbox control.
Fixed varous other rendering bugs related to frame-based listboxes.
bug #2797. GetSize is no longer needed in nsListControlFrame and it has been removed.
Fixed frame-based combobox nsComboboxFrame so that will set it's label to the
first option in the drop-down list if a default value has not been specified.
Added optgroup style rules to ua.css. Opt groups now render, but there are remaining
problems with selection.
Modified nsButtonControlFrame::Reflow to call nsFormFrame::AddFormControlFrame.
This fixes a bug where Gfx-rendered submit button's were not working.
Refactored code in nsListControlFrame in preparation for supporting option groups.
Refactored selection code into SingleSelect and MultiSelect paths.
Removed unused code in nsListControlFrame.
Removed mSelectedFrame member variable. It is no longer needed.
Fixed nsListControlFrame::SetProperty so that it will toggle the selection in a
single select listbox.
Major changes to nsComboboxControlFrame:
Removed commented out code + nsIPluggableEventListener references.
Implemented nsComboboxControlFrame::GetNamesValues
Implemented nsComboboxControlFrame::SetProperty GetProperty methods
Fixed references to previously freed memory in nsComboboxControlFrame::ReResolveStyleContext
Modified ua.css style rules for dropdown-visible, drodown-hidden to have -moz- prefix.
Added -moz-dropdown-btn-out and -moz-dropdown-btn-pressed, -moz-dropdown-list rules.
Modified nsListControlFrame.cpp to calculate the width of the dropdown list for combo boxes correctly
Added nsListControlFrame::GetProperty and SetProperty methods.
Modified nsCSSFrameConstructor::ConstructSelectFrame to setup combobox.
2) Fixed ProgressMeter to update correctly when attributes change
3) Fixed sample8.html so that it does not over ride the borders of the HTML4 button this
messed up the active, hover, and disabled states.
