lalapps_compareFstats: removed obsolete '--clusterFiles' option

- 'clusterFiles' were only written by obsolete CFSv1 code
pulsar/FDS_isolated: moved obsolete and unused test scripts into attic

- refs #20
lalapps_compareFstats: use vector-comparison function instead of bin-wise comparison

- more robust F-stat vector comparison, new input arguments specifying
  tolerances on L1-, L2- vector comparisons, relative angle, and
  relative error at respective maxima
- passes 'make check'