sensors-detect patch

[Bruce Miller]

Hi Sensor guys;

I hope this is an acceptable way to post a (possible) patch.
lm_sensors' sensors-detect is failing to detect my w83781d,
but a simple change fixes it.

I'm a little confused by the differences in the versions I've got
handy:  I've installed RedHat Linux 9, which includes lm_sensors
2.6.5-5, in which sensors-detect has the subroutine:

sub outb
{
  my $towrite = pack "C", ($_[1] & 0xff);
  ...

I also had a version 2.7.0 floating around on my disk, which has
as the 1st line:
  my $towrite = pack "C", $_[1];
without any masking.  That looks like a regression (and causes perl
to complain about `wrapping' a character) or perhaps RH modified thier
version to elliminate the message.

At any rate, I'm guessing that
  my $towrite = pack "C", ($_[1] & 0x7f);
is more appropriate. (ie. masking the high bit as well).
At least, that enables sensors-detect to detect my hardware (hopefully)
correctly.

Hope this helps; and Thanks for a really useful package!

Bruce