Proposed new LDRAW_ORG qualifier for Lsynth subparts

[Philippe Hurbain]

The problem is not strictly a problem with Lsynth! People using cad system without flex part extension (mlcad, leocad) might want to "manually" build custom flex parts using segments. Tedious, but rather easy, done that many times in the past... So the segments MUST be in parts folder to be accessible by users! That's why I find Chris proposal to be a good one (none of these older cad system cares about real part type)