set_user_nice in 2.4.18

[Joakim Tjernlund]

Hi John

I fixed this earlier today, but I changed the test to < 2.4.21 since it's supposed(as I understand it)
to be in 2.4 but havn't been merged yet.

 Jocke

> 
> Hi,
> 
> I found a problem compiling the latest cvs version against armlinux 2.4.18-rmk7. It seems that this kernel doesn't have 
> set_user_nice defined; compatmac.h checks for versions less than 2.4.18 before defining set_user_nice. I checked vanilla 
> 2.4.18 and 2.4.19 and they don't have it either. A patch is attached that changes the check to check for less than 2.5.0, 
> assuming this is correct.
> 
> regards,
> John