gnoos_graph: Consider <target>_<arch> target subsections
gnoos_graph: Consider <target>_<arch> target subsections

Closes #33

Componolit/componolit,Componolit/componolit,Componolit/componolit,senier/componolit,senier/componolit,senier/componolit,senier/componolit,Componolit/componolit,Componolit/componolit,Componolit/componolit,senier/componolit