Test Case:     Set CPU Frequency Policy
Categories:    Desktop, KDE, CPU Frequency
Requirements:  KDE Installation, a machine with support to change the 
               CPU freq settings
Depends On:     

Action:
============================
Start KDE as normal user, check if KPowersave is running (check for the 
KPowersave icon in the taskbar, or "ps aux | grep KPowersave").

Call 'lshal' and check if CPU frequency control is supported by HAL 
(otherwise KPowersave isn't able to change the CPU Freq Policy). Search 
for :
   
    "info.capabilities = {'cpufreq_control'}"

Check if KPowersave support CPU Freq Policy changes: click with the left 
mouse button on the applet icon and check in opened dialog for:

   "Current CPU Frequency Policy: "

Close the dialog and call this command on a console:

  watch 'grep . /sys/devices/system/cpu/*/cpufreq/scaling_governor'

Open the KPowersave applet menu (with right mouse button), select 'Set 
CPU Frequency Policy' and then change the CPU Frequency from 'Dynamic' 
to 'Performance'.

Expected Results:
============================
After ~2 seconds the output of the 'watch' call should change. Normally, 
if you switch from 'Dynamic' to 'Performance', it should change from 
'ondemand' to 'performance'