updated cal script for psa6240 : psa6240_v001.py

tau_ew, tau_ns, and redcal gain paramters
add files for amplitude calibration.
added in bandpass and new pic values from danny results
Change beamform to take in a minimum distance param.

Don't use data for bls less than this.
Update history line to add in minsep and maxuv.
Add in avoidsrc option.

the script avoids using data for which the avoidsrc source is up.
add print statement
Update bandpass parameters.
Update bandpass parameters once again.

taken from meas_src_spec.py -s pic -C psa6240_v001 psa6301/*.bm_pic .
on 10/16/2013
Merge branch 'master' of git://github.com/AaronParsons/capo
Merge branch 'master' of git://github.com/AaronParsons/capo
Merge branch 'master' of git://github.com/AaronParsons/capo
Merge branch 'master' of git://github.com/AaronParsons/capo
Added batch_prelst.sh