Performance. Removed another use of an STL structure, and replaced it with a simple malloc()ed buffer, which cut about 20% off our CPU usage.
Performance. Removed another use of an STL structure, and replaced it
with a simple malloc()ed buffer, which cut about 20% off our CPU
usage.

Note, this could probably even be put into a statically-sized
structrure, but Jon would have to verify this.

nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome