Own powersave script

+ add old pm-utils powersave scripts
Fix a bug where hdparm was not executed
hdparm is not in the PATH
Comments
Only use Ondemand governor
Update to new defaults
Replace program & by exec program &

+ Typos
Brightness changes

For powersave on, do not set up brightness if it is already lower
currently.
Remove old files

The files from pm-utils are in /usr/lib/pm-utils
Update README
Save original powersave script from crunhbang forum
Erase old files
logs: switch from rfc-3339 to iso-8601
Fork the execs correctly
Makefile: also install powersave.config
Be consistently quiet
powersave: now equivalent to true when called without parameters
Makefile: udev config file should not have +x mode set
Brightness: match everything in backlight/
Adopt the systemd scheme of putting default config files in /usr