version reporting

[Andy Willis]

It would be quite helpful and handy to have the ability in Mozilla to
lie about it's version and OS.  Some sites can be faked using a proxy
and will still work but others use javascript to do the checking and
hence the proxies don't cut the mustard.
Andy
P.S.  Is it possible to lie about the version in 4.61.  I have it setup
to lie to some pages about the OS but www.dialpad.com requires NS 4.51
or higher except 4.6 so I can't get past it.