2010-04-23 Trunk builds
Fixes:
- Fixed: 502937 - Lazy frame construction.
- Fixed: 474060 - [Windows] Show download progress in app icon in Windows 7 taskbar.
- Fixed: 549061 - [Windows] New Style for Tabs (screenshots).
- Fixed: 544356 - [Windows, Linux] Exit when only the download manager window is open and there are no downloads.
- Fixed: 418521 - Focus ring appears on mouse interactions (as opposed to only when tabbing through items).
- Fixed: 452915 - Linked images have a blue border in default style sheet.
- Fixed: 448630 - New <audio> and <video> elements don't show up in Tools > Page Info > Media.
Fixes for recent regressions:
