added a hint that find the installed version of gtest over a one in /usr/lib
added a hint that find the installed version of gtest over a one in /usr/lib

jlittell/cycamore,Baaaaam/cyBaM,Baaaaam/cyCLASS,rwcarlsen/cycamore,cyclus/cycaless,Baaaaam/cycamore,jlittell/cycamore,gonuke/cycamore,Baaaaam/cycamore,gonuke/cycamore,rwcarlsen/cycamore,gonuke/cycamore,Baaaaam/cyBaM,gonuke/cycamore,rwcarlsen/cycamore,jlittell/cycamore,Baaaaam/cycamore,Baaaaam/cyBaM,Baaaaam/cyCLASS,Baaaaam/cyBaM,jlittell/cycamore,cyclus/cycaless,rwcarlsen/cycamore