HEADSUP: default for hw.acpi.reset_video changed

I thought this would be a small change (since the default was already 
supposed to be this way) but as usual with acpi, there is a lot of 
variation out there.  I think it's split about 50/50 between systems 
where enabling this feature is helpful/neutral and those that it is harmful.

The default value of the tunable/sysctl for hw.acpi.reset_video has 
changed from 1 to 0 (off).  This means the BIOS video reset method will 
not be called automatically on resume.  If you want the previous 
behavior, set hw.acpi.reset_video="1" in /boot/loader.conf or 
/etc/sysctl.conf.

If a committer could throw the 2nd paragraph in UPDATING, that would be 
nice, thanks.

Thanks,
-- 
Nate