Fix scanning of non-managed search paths and gracefully upgrade to new layout.
Fix scanning of non-managed search paths and gracefully upgrade to new layout.

xentec/dub,Flamaros/dub,p0nce/dub,jelmansouri/dub,grogancolin/dub,D-Programming-Language/dub,jeanbaptistelab/dub,rjframe/dub,Geod24/dub,gedaiu/dub