[SVN] r7022

[Chris Thomas]

Minor Ruby UI library improvements:

• Reimplement request_string, request_secure_string, and request_item using nibs instead of CocoaDialog. After this checkin, only UI::request_file and UI::request_files (and some bundle commands) use CocoaDialog.

• UI::request_item (pick from a list of items) is now a list instead of a popup. You can double-click an item to immediately choose it and dismiss the dialog.

• The standard spelling of OK is 'OK', not 'Okay'.

Changed:
U   trunk/Support/lib/ui.rb