Check HP switch sensor status via Nagios

It works as advertised, but there's no help option, so you can't request the usage with "-h". Also, when run from the commandline, it omits a newline, so it messes up the terminal window, but perhaps when called from nagios, this isn't a problem. Also, perl complained about: Use of uninitialized value within @sensor_desc in pattern match (m//) at check_hpswsensor line 54. Use of uninitialized value $lsensor in concatenation (.) or string at check_hpswsensor line 56.