MODIFIED: meta_predicate/1 declarations associate the declared predicate
with the source file being loaded.   Reloading a file _clears_ meta
predicate declarations.
ADDED: list_void_declarations/0 to list predicates that have declarations
such as meta_predicate/1 but no clauses.
ADDED: make/0 calls list_void_declarations/0
Updated pengines
Small update
Updated http
ADDED: timeout and deadline options to thread_send_message
Updated syspred_options.pl to reflect new thread_send_message/3.
FIXED: Wrong declaration (new warning).  Jacco van Ossenbruggen.
FIXED: Location in error message when reading from a stream swapped
line and line position.
ADDED: library(sandbox): term_string/2.
Updated pengines
Updated clib
Updated clib
Updated pengines
ADDED: Declare print_message/2 as safe.
Updated pengines
Updated pengines
Updated pengines
Updated pengines