lsmonitor script for LS-CHL with debian

Based on:
 blstools  - Copyright (C) 2010 Michele Manzato
 lsmonitor - Copyright (C) 2013 Sergej Wildemann

Credits:
 Thanks to archonfx on Buffalo NAS Central forum for HDD
 temperature monitoring command.


lsmonitor:
- handle ls complete power-on
- monitor hdd temperature & control fan speed
- monitor hdd status & control function led
- monitor power switch
- monitor function button
- handle pressed function button -> execute user defined script