hoftcache: turn off mmap and increase blocksize to help with nfs (since that is basically the point of this module)

gstlal_inspiral, gstlal_inspiral_create_prior_diststats: use gstlal_inspiral_create_prior_diststats to make the numerator not gstlal inspiral

gstlal_inspiral, inspiral.py: make process start time the same for each output file for accuracy and to reduce process metadata bloat

injection str at end for use in analysis makefile will now be written to a user
specified file instead of to stdout

this fixes the code (for some unknown reasons) falsely adding (some of the) GAP segments in the analyzed segment list
there is still a bug where segment of length 0 gets included in the segment table, but it won't affect the livetime

to save memory

for obtaining the segments analyzed

gstlal_feature_extractor_pipe: determine drop time based on fft length, split up combiner jobs into disjoint gps ranges