* filter-datespec.c (timespans, set_button): Change the strings in
the timespans array from "second" / "seconds" to "1 second ago" /
"%d seconds ago", etc, and update the code in set_button that uses
them. Fixes#36245, translation clash between the "second" here
and the one in the calendar (where it's used as "2nd").
svn path=/trunk/; revision=20432