Click and 2.4.9 kernel bug in compiling + fix

[Eddie Kohler]

> to solve the problem I have changed :: in : : based on a similar thing
> in the 2.2.18 patch for rwlock.h. But I don't know what this means and
> if this is the correct solution (and why hasn't nobody else had this
> problem before ?

As for why no one had the problem, this file probably is conditionally
compiled based on kernel options...

Eddie