buildworld fails on just updated source

[Ferruccio Zamuner]

# make buildworld
[...]
===> usr.bin/kdump
sh /usr/src/usr.bin/kdump/mkioctls 
/usr/obj/usr/src/world_i386/usr/include > ioctl.c
/usr/src/usr.bin/kdump/mkioctls: awk: Argument list too long
/usr/src/usr.bin/kdump/mkioctls: awk: Argument list too long
more info on:

http://rafb.net/p/1H5KtE42.html