Fix cmd line parsing of sqrtSX
testComputeAntennaPattern: fix paths and ephem handling

 -moved to lalapps/pulsar/Tools in 756ca981
 -and ephem dir handling was also modernized at some point
 -refs #1089
Multi-IFO extension of ComputeAntennaPattern

 -refs #1089
testComputeAntennaPattern: simplifications and reentrancy

 -avoid extra temp files where piping helps
 -remove leftovers from failed runs at start
 -refs #1089
ComputeAntennaPattern: noise weighting

 -also extended test script
 -and improved awk usage in there
 -refs #1089
ComputeAntennaPattern: split ap function / matrix output into two files

 -outputab for a(t), b(t)
 -outputABCD for time-averaged A,B,C,D
 -backwards-incompatible change of user vars
 -refs #1089
ComputeAntennaPattern: allow multi-IFO timestampsfiles input

 -deprecate old --timeStampsFile
 -new --timeStampsFiles can have either 1 file for all IFOs
  or Ndet files
 -adjusted test script
 -for the moment, fail for --timeStampsFiles with more than 1 file and --outab
  (would need more elaborate output format)
 -refs #1089
ComputeAntennaPatterns: workaround to have unweighted single-IFO output

 -single-IFO quantities in multi-IFO run should not be different
  from single-IFO run
 -currently, MultiAMCoeffs stores weighted single-IFO quantities
 -worakround: run twice, once without weighting, and output those
 -refs #1086
 -refs #1089
FstatMetric_v2.c: fix cmd line parsing of sqrtSX