Supoort pycbc_timslides in sqlutils.py
lalinference_pipe: only write dax if requested
Revert "XLALSimAddInjectionREAL8TimeSeries() XLALSimAddInjectionREAL4TimeSeries()"

This reverts commit 8c9f042607152fa699405a7579412efa385f8a63.

See <https://sympa.ligo.org/wws/arc/cbc/2014-03/msg00548.html>