gstlal_compute_strain:  Added a trick to make it possible to high-pass filter the inverse sensing path at a lower sample rate without losing information above the Nyquist rate.

gstlal-calibration:  Many small chenges, including conditional reading in of a config file parameter in gstlal_compute_strain and DCS config file updates.

gstlal-calibration/tests/check_calibration/Makefile:  Fixed easy raw frame maker so that it only makes raw frames to fill in any gaps.

- avoid an attribute look-up inside lower_bound_in_seglist()

gstlal_compute_strain:  Better way to to check for config file options that may not be present.  New option to flip sign of the pcal channel.

This reverts commit 62952454.

ll_simplify_and_cluster.sql: delete high far events (above 1e-4) from the databases to keep the size manageable.

inspiral.py: choose only the best coinc for gracedb uploads, and fix performance issue of generating an xml doc when there are no uploads to do

gstlal_ll_inspiral_daily_page: fix some comments and comment out plot background code, which isn't working

gstlal_compute_strain:  numerous small bug fixes so that the pipeline will run with various combinations of options.  Most notably includes high-latency bug fixes.

lal_transferfunction:  Now has property parallel_mode, which when true produces output independent of start time.  This is useful for offline calibration and noise subtraction.

- add snr_min cut to remove sub-threshold triggers in case itac starts
  producing them