avoid null in Scala; tuned comments;

updated keywords;

removed obsolete Goal.local_future_enforced: Toplevel.run_command is no longer interactive, so Goal.local_future_enabled is sufficient (cf. 349e9223c685 and e07dacec79e7);

merged

merged

quotient types registered as codatatypes are no longer quotient types

added a friendly warning

extend the scope of limitation about nonconservative extensions

improved "merge_type_vars" option: map supersorts to subsorts, to avoid distinguishing, say, "{}", and "HOL.type"

Remove duplicate locale activation code; performance improvement.

added record field

added "whack"

handle "Rep_unit" & Co. gracefully

added support for "Abs_" and "Rep_" functions on quotient types

fiddle with specialization etc.

handle inductive predicates correctly after change in "def" semantics

don't specialize built-ins or constructors

more docs

prevent the expansion of too large definitions -- use equations for these instead

make nitpick accept "==" for "nitpick_(p)simp"s

fix bug in Nitpick's "equationalize" function (the prems were ignored) + make it do some basic extensionalization

deal correctly with Pure.conjunction in mono check

rename internal functions

remove buggy and needless condition

renamed internal function

Cycle breaking in the bounds takes care of singly recursive datatypes, so we don't need to do it again; the effect of removing the constraint varies on problem to problem, but it tends to be overwhelmingly negative in conjuction with the new datatype sym breaking stuff at high cardinalities

avoid "<=>" in sym break constraint generation (since these are SAT-unfreundlich) + fix "epsilon2" to "epsilon1" (subtle bug)

improve datatype symmetry breaking; all based on "datatype bin_list = BNil | B0Cons bin_list | B1Cons bin_list" example

merged

make SML/NJ happy