cleaning up, modernizing, code
	modified:   lists_aex/list.lisp
	modified:   lists_aex/lists_aex.system
	modified:   lists_aex/rtests/rtest_list.mac
make arg check :map-function
	modified:   aex/ifunctions.lisp
	modified:   defmfun1/arg-spec-definitions.lisp
work on type_of
	modified:   aex/mext-predicates.lisp
	modified:   aex/rtests/rtest_type_of.mac
reformat
	modified:   discrete_aex/number-functions.lisp
forgot to commit with cleanup of this code
	modified:   lists_aex/lists_aex.mac
new package. presently, only function is timing.
	new file:   runtime/ibuild.mac
	new file:   runtime/rtests/rtest_runtime.mac
	new file:   runtime/runtime.mac
	new file:   runtime/runtime.mxt
	new file:   runtime/runtime.system
modernizing constant_list
reorganize
renumber tests, remove mapall
change with_output_to_string to defmfun1 function
remove cruft
	modified:   lists_aex/strings.lisp
reorganize mext package runtime