Experimental driver for monitoring UPSs via SNMP.  Supports a wide 
range of devices by loading various MIBS, including:

       ietf:  UPS that is RFC 1628 (UPS MIB)  compliant,  ie  MGE
              UPS SYSTEMS, Liebert, perhaps others (default)

       mge:   MGE UPS SYSTEMS devices with SNMP cards (ref 66062,
              66045, 66074 and 66244)

       apcc:  APC AP9606 APC Web/SNMP  management  card,  perhaps
              others

