* goops/util.scm (filter): Removed. (Now supplied by core.)
* list.c, list.h (scm_filter, scm_filter_x): New functions.
* debugger/command-loop.scm: Prefix all commands imported from
(ice-9 debugger command-loop) with debugger:.
* boot-9.scm (resolve-interface): Process #:hide; Name custom interfaces
appropriately.
(module-use!, module-use-interfaces!): Remove existing interfaces
on the use-list based on module name rather than interface
identity so that custom interfaces truly replaces their previous
version.
delete delete! assoc): Marked as replacements.
* goops.scm (define-extended-generics): New syntax.
(<class> <operator-class> <entity-class> <entity>): Marked as
replacements.
* boot-9.scm (module-override!, make-mutable-parameter,
lookup-duplicates-handlers, default-module-duplicates-handler):
New functions.
(process-duplicates): Don't call duplicates handlers for duplicate
bindings of the same variable.
(process-define-module): Process #:replace.
(compile-interface-spec, resolve-interface): Process #:prefix.
* format.scm (format): Marked as replacement.
* threads.scm (future, future-ref): Marked as replacements.
internal definitions.
(list-tabulate, iota): check for bad arguments that otherwise
give weird output.
(filter): check for proper list, to avoid infinite recursion on
a circular list.
delete!, assoc): don't export until the new bindings have been
created. otherwise "export" thinks they are being re-exported and
a deprecation warning is produced.
(delete-duplicates): Now the first occurrence of an element is
retained, as required.
(member, assoc): Fixed wrong order of equality predicate
application.
