makewhatis: move verbose stuff into respective if statement
device attachment: no lock necessary

Remove devattach_token, there was no need for it after all.

In-discussion-with: corecode
In userland, fix printf(-like) calls without literal format and no args.

I.e., silence gcc's -Wformat-security warnings (in non-contrib code).
Unbreak building kernels that have snd_hda or hifn in the config.
kernel: Make ichiic compilable into the kernel and add it to LINT.
libevtr: Fix another -Wformat-security warning.
libwrap: Fix two -Wformat-security warnings.
Add -Wformat-security to WARNS >= 2.