Fix to thumbnail production; instead of reading binary data with a backtick cat, open the file and read it like a real program would.
Fix to thumbnail production; instead of reading binary data with a
backtick cat, open the file and read it like a real program would.

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