Change runtime system so that a lambda's name is not considered a

Change runtime system so that a lambda's name is not considered a
bound variable.  Eliminate all references to `#!false' and `#!true'.
Eliminate `canonicalize-filename-string', since pathname parsing is
now system-dependent.  Install new quasiquote expander which does
vectors.  Teach `eqv?' to handle null length vectors.  Eliminate
`make-package' special form.