Password strength meter

[Andrew Coles]

I recently discovered a nice feature in Mozilla - in the master password 
dialogue there's a 'Password strength meter', which gives a rough indication 
of how good the password is (capitals, numbers, symbols etc.).

I've implemented the same feature in KPassDlg; obviously, I won't commit it 
unless it's approved.  The diff is available at:

http://cis.strath.ac.uk/~ac/kpassdlg.cpp.diff

Any comments?

Thanks,

Andrew