Minor version bump

[b]2.2.1 Release Notes:[/b]
* Added: Link and long word wrapping now also reflows pre tags
* Updated: Bumped Firefox, SeaMonkey and fixed Flock supported version
* Fixed: Removing tab and content event listener on unload
* Fixed: Undeclared variables, inconsistent event calls and other cleanup

- Added: "blog.myspace.com" & "webmail.aol.com" have been added to the exclude list of domains (please reset preference to default for future updates)
- Updated: "mail.google.com" is now "google.com" as Google appears to handle long lines/links well on their own
- Updated: Character limit checking is now disabled by default, if you experience performance problems on older computers, re-enable this
- Updated: Bumped Netscape version support to 8.1.2, bumped SeaMonkey version support to 1.5a

This is the same build as Link Wrapper 1.3, Link Wrapper 2.0 introducing statusbar, options dialogs and all the bells and whistles, this version just does it's job and shuts up.