Inclusion of LSYNTH parts in the official LDRAW library

[Don Heyse]

So I took a peek at the lsynth distribution site and you're right, there's no synthesis parts package there. I remember now that we decided it was best to have Willy host that on his site with the documentation, because he updates the parts far more often then the actual code. I suppose I should add a note on the lsynth site to look there for the Constraints_3-1.zip file if you just want the parts to view someone else's synthesized constructions. Or better yet, maybe I should add the current file and a note to visit the documentation for the most recent version.