Don't include tag.id in warning about dropped tags: since we now handle nested symbols, the id can never be anything but undefined at this point.
Warn about dropped tags in one more place
Copy avmshell to additional location
Merge pull request #1722 from tschneidereit/master

Slightly improved debug messages for ignored SWF tags
Improvement to the FF extension's context menu

Specifically:
 - Bug 1068342 - Add a "Reload in Adobe Flash Player" context menu item to fallback back from Shumway to Flash (we had this under a different name)
 - Bug 1064435 - Add "About Shumway [version]" context menu item, like Flash plugin's "About Adobe Flash Player [version]" (without the [version] part for now, because that's a bit annoying to do/hard to make work without introducing startup time regressions)
 - Bug 1064005 - Shumway "Report Problems" context menu item does nothing: ReferenceError: avm2 is not defined viewer.js:171
 - No Bug - change the "Report Problems" entry to open a bugzilla.mozilla.org bug entry form prefilled with some useful information and set to the correct component
Merge pull request #1723 from tschneidereit/master

Improvement to the FF extension's context menu