buildkernel failure because ctfconvert not installed

[Gary Jennejohn]

OK, I figured it out.

I used to have MK_CTF=no in src.conf, but I recently changed it to
WITH_CTF=no.

/sys/conf/kern.post.mk checks whether MK_CTF is no and apparently
does not invoke ctfconvert if that is the case.

I put MK_CTF=no back into src.conf.

So, now everything works without having cftconvert installed.

-- 
Gary Jennejohn