Add check to dynamically detect fitnesse.jar location.
Add check to dynamically detect fitnesse.jar location.

rbevers/fitnesse,amolenaar/fitnesse,rbevers/fitnesse,jdufner/fitnesse,amolenaar/fitnesse,hansjoachim/fitnesse,jdufner/fitnesse,amolenaar/fitnesse,hansjoachim/fitnesse,rbevers/fitnesse,hansjoachim/fitnesse,jdufner/fitnesse