Changes from Mercurial (hg http://isabelle.in.tum.de/repos/isabelle/ default)
Summary
- merged
- proper relative path;
- unused;
- present auxiliary files with PIDE markup; more robust treatment of non-text files (notably $POLYML_EXE);
- tuned;
- tuned;
- tuned signature: more explicit types;
- tuned signature;
- clarified signature and module structure;
- tuned signature;
- clarified comments: file-system access is always unsynchronized;