Change segment imports from glue library to ligo-segments library (ligo)

This is meant to fix type errors caused by a mixing of segments from the glue library and ligo-segments library which have recently popped up when running batch jobs in a new build pulling from lalsuite master.

This issue has popped up recently in gstlal as well because of a change in lal by Duncan Macleod about a month ago: lalsuite@61dffc12

and the bug encountered by gstlal is found here: https://bugs.ligo.org/redmine/issues/6183

Note: I could change the import name glue_segments to ligo_segments or something else if you'd like instead.