If <module>.__dict__[<name>] does not exist and
<module>.__lazy_code__[<name>] does exist, evaluate the code and
then return <module>.<name>.  This allows the implementation of lazy
module imoprts and lazy module top-level definitions.

This is an alternative to compile_all.py.  If the module has
__lazy_module__ in the globals (i.e. explicitly marked as lazy
safe), top level definitions in the module will become lazy loaded.
I.e. the code that is evaluated to create the object will not be
evaluated until LOAD_NAME/LOAD_GLOBAL or module getattr() looks for
it.

Rather than marking the whole module as lazy safe or not, print a
list of top-level module definitions, classifying them as 'lazy' or
'eager'.