Click and 2.4.9 kernel bug in compiling + fix

[Eddie Kohler]

Hi Brecht,

> 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

I think this is the correct solution. The problem is that "::" is a single
token in C++, but it's parsed as two tokens in C. Adding the space breaks
it into two tokens again.

Eddie