clear the cache used by revBrowser

[Ben Rubinstein]

David Bovill wrote:
> I guess this is the cache used by anything that uses webkit to embed the
> system browser on Macs? If that's the case you may get a conflict with other
> apps?

Actually not - see reference below to bundle identifier.

 >  put specialFolderPath("utmp") & "/-Caches-" into tCacheFolder
 >
 > After that, just add your bundle identifier! To clear the cache, simply
 > delete the folder...

However, I don't know the answer to sims' question about the corresponding 
location on Windows.  But refer anyone interested to:

http://quality.runrev.com/qacenter/show_bug.cgi?id=7336

- Ben