removed print function from global ML name space, to reduce risk of surprises;

made SML/NJ happy;

attempt to eliminate adhoc makestring at runtime (which is not well-defined);

eliminated misleading dummy versions of print/makestring, cf. 6974449ddea9;

provide local dummy version of makestring -- NB: makestring is fragile and not portable, it should not occur in repository sources;

no longer open PolyML -- to avoid surprises within the global name space; recovered some important PolyML bindings (NB: print and makestring cannot be rebound without loosing infinite overloading);

explicit PolyML qualification;

removed "compress" option from isabelle-process and isabelle usedir -- this is always enabled;

test experimental Poly/ML 5.3;

removed obsolete COPYDB flag;

explicit PolyML.install_pp;

renamed polyml_pp.ML to pp_polyml.ML; explicit PolyML.install_pp;

more modular setup of runtime compilation;

more precise version information;

uniform treatment of shellscript mode;

updated example settings;

discontinued support for Poly/ML 4.x versions;

ISABELLE_USEDIR_OPTIONS: proper word splitting of quoted options (via array variable and special expansion, cf. "$@");

eliminated old Attrib.add_attributes (and Attrib.syntax);

modernized attribute setup; removed obsolete no_args, add_del_args;

eliminated old Method.add_method(s);

removed obsolete combinators for method args;

proper signature constraint; modernized method setup;

minimal signature cleanup; modernized method setup;

modernized method setup; tuned;

modernized method setup;

tuned;

tuned;

simps with mandatory name prefix

corrected bound/unbounded flag for nat numerals

removed dead theory Relation_Power

fix reference to dist_def