lal_smoothkappas:  New options to allow for medians and averages to be computed before the array is full

- lal_smoothkappas: added filter latency option.
- lal_resample: simpler treatment of gaps. The complicated nonsense from before was unnecessary and messed things up.
- calibration_parts.py: function to remove lines and harmonics with a witness channel now works well.

gstlal_compute_strain:  Corrected mistakes with reading EP10 from frames and casting gps-start-time to an int

lal_smoothkappas: Now, the order of elements in the average array is insensitive to the start time and the array size. This should resolve the remaining discrepancy in h(t) computed with different start times.

gstlal-calibration:  Changed calib_state_vector calculation to better accommodate recent changes in kappa gating and smoothing

gstlal-calibration: Added option --kappas-default-to-median to gstlal_compute_strain so that when coherence is bad or we are not locked, the median gets populated with the last good median value, not a default value. This required changes in the calib_state_vector calculation as well.

Update to Debian build from Steffen's patch and bug fix in gstlal_smoothkappas.c for misplaced parentheses

gstlal_compute_strain: kappa calculations: corrected how we gate with coherence uncertainty channels. Also replace zeros with default-kappa in lal_smoothkappas.

New element lal_insertgap can be used to gap or replace undesired values in a data stream.

	- Add option to gstlal_compute_strain
	- Add DQ vector computing option to lal_smoothkappas
	- Update calibration_parts.py appropriately

gstlal-calibration:  lal_smoothkappas:  Changed algorithm to compute running median. Added property default-to-median. Also fixed memory bug in lal_smoothcalibfactors.

gstlal-calibration:  lal_demodulate:  Changed sign in exponential. Now it multiplies stream by exp(-i * omega * t).
                     lal_smoothkappas:  Changed default values for properties maximum-offset and kappa-ceiling.
                     calibration_parts.py:  Incorporated the property kappa-ceiling in function smooth_kappas. Added function smooth_kappas_real_test for testing various smoothing options. Used pow instead of complex_pow where appropriate.
                     gstlal_compute_strain: added option kappatst-real-ceiling and kappa-tst-imag-ceiling and used these in the smoothing of kappatst.

gstlal-calibration:  lal_smoothkappas:  fix treatment of gaps. The smoothed kappas on the outbuf remain constant if there is a gap in the inbuf.

gstlal-calibration:  lal_smoothkappas: New element that uses a simlper method to smooth calibration factors