CXMAN-119: Handle error messages for abnormal IPMItool termination
CXMAN-119: Handle error messages for abnormal IPMItool termination

This comes up during keyboard interrupts, which can sometimes kill
IPMItool before cxmanage realizes what's going on.

SilverLiningSystems/cxmanage-test2,SilverLiningSystems/cxmanage-test2,SilverLiningSystems/cxmanage-test,SilverLiningSystems/cxmanage-test,Cynerva/cxmanage,SLS-Dev/cxmanage,Cynerva/cxmanage,SLS-Dev/cxmanage