wsevent MP-safe

[Mindaugas Rasiukevicius <rmind%netbsd.org@localhost>]

Hello,

Here is a patch (been forgotten and dusting in my tree for a while) making
wsevents part of wscons(9) MP-safe.  Also, adds some comments and clean-ups
interface slightly.  It would be a step towards making wscons(9) and related
drivers MP-safe.

        http://www.netbsd.org/~rmind/wsevents_mpsafe.diff

Comments?

-- 
Mindaugas