[RFC]: switch to 2.6 linux emulation on default

[John E Hein]

Roman Divacky wrote at 23:48 +0200 on May 29, 2008:
 > I am asking you to express your attitude towards switching
 > to 2.6 emulation on default in a week. Speak now or forever hold
 > your peace...

I say we do it (last month).  Users can always go back via sysctl if
needed.  That's no problem for -current users.  Notes in UPDATING
files would be useful, of course.