Changes

Changes from Mercurial (hg http://isabelle.in.tum.de/repos/isabelle/ default)

store timings for used_theories in canonical order, with reconstructed store.read_theories;

Changeset 72738:a4d7da18ac5c by wenzelm: store timings for used_theories in canonical order, with reconstructed store.read_theories;
The file was modified	`src/Pure/Thy/sessions.scala`
The file was modified	`src/Pure/Tools/build_job.scala`