Renamed class fasl-or-cfasl-node to object-file-node

Defined a method for initialize-instance specialized on the class
concrete-module that allows for a keyword :depends-on.  Saying
":depends-on ("foo" "bar")" in a module declaration is the same
as saying ":compile-depends-on ((:compile "foo") (:compile "bar"))
:load-depends-on ("foo" "bar")"