Use calendar.timegm() rather than time.mktime() and imperfect compensation, to fix subvertpy.properties.time_from_cstring() producing incorrect results for times within the local system timezone's DST.
Use calendar.timegm() rather than time.mktime() and imperfect compensation, to
fix subvertpy.properties.time_from_cstring() producing incorrect results for
times within the local system timezone's DST.

jelmer/subvertpy,jelmer/subvertpy