Found a solution to compile things

1 move up the file up into the parent dir of Original-files
2 in the file replace the include and use by
include <parameters.scad>;
use <library.scad>;

Surprisingly the results for the carriage.scad and x-*.scad files don't produce matching versions of the STL files (x-carriage-lower-left_1off.stl, x-carriage-lower-right_1off.stl and x-carriage-upper_1off.stl).