Description:
I tested this using the test-libacpi program that ships with the library. I haven't had a chance to look at other things like fan/thermals etc. I mostly looked at battery status, and that is broken. This is mostly because the entries in /sys/class/power_supply/BAT/ changed, and the library hasn't been updated to account for the changes. I managed to fix all of these and have uploaded my fixes to github here - https://github.com/aravind/libacpi. The last commit is the one that patches things to make it work.

Additional info:
* package version: 0.2-3

* log files
Here is the output from my laptop before the library was patched.
----------------------------------------
# /usr/bin/test-libacpi
AC adapter: off-line

BAT: present: 1
design capacity: 5600000
last full capacity: 5216000
design voltage: 11100000
present rate: 0
remaining capacity: 3512000
present voltage: 11432000
charge state: 0
battery state: 0
percentage: 67%
remaining charge time: -35791394:-8 h
remaining time: 00:00 h
BAT: Alarm!
Thermal information not supported
Fan information: not supported
----------------------------------------

Here is the output after my patches.
$ ./test-libacpi
AC adapter: off-line

BAT: present: 1
design capacity: 5600000
last full capacity: 5216000
design voltage: 11100000
present rate: 0
remaining capacity: 3475000
present voltage: 11406000
charge state: 1
battery state: 0
percentage: 66%
remaining charge time: 00:00 h
remaining time: -35791394:-8 h
BAT: Alarm!
Thermal information not supported
Fan information: not supported