incorporate isabelle.graphview into Pure.jar, which saves 20..30s build time;
discontinued pointless "isabelle graphview" command-line tool (Proof General legacy);
#hard-wired components
src/Tools/Code
src/Tools/jEdit
src/Tools/Graphview
src/HOL/Mirabelle
src/HOL/Mutabelle
src/HOL/Library/Sum_of_Squares
src/HOL/Tools
src/HOL/Tools/ATP
src/HOL/Tools/Sledgehammer/MaSh
src/HOL/TPTP