gstlal-calibration:  Update gstlal-calibration.spec.in and debian/gstlal-calibration.install to package everything we need.

gstlal-calibration/tests/check_calibration:  Added GPS start time to name of files in pcal-to-darm plotting script.

gstlal-calibration:  Added debugging element splitcounter for printing buffer timestamps and offsets to screen and file.

gstlal-calibration:  Example in tests/check_calibration/Makefile for using transfer function plotting script.

gstlal-calibration:  New plotting script in tests/check_calibration/plot_transfer_function.py to plot transfer functions.

lal_transferfunction:  added event() function back in to get best possible transfer functions at EOS.

gstlal-calibration:  Improved methods for doing noise subtraction multiple times using different witnesses in series.

- test_commpn.py:  Seeking pipeline seems to work now.
- pcal-to-darm plotting script:  now works in new setup.
- gstlal_compute_strain: removed stray dq_epics variables

gstlal-calibration:  Using Makefile to generate directories with filters when needed, but these directories are in .gitignore, so they will not be part of the gstlal repo.