exekall: Set package attribute when importing submodule
exekall: Set package attribute when importing submodule

FIX

Set attribute on parent package when importing a module. This allows
doing:

    # Exekall imports foo.bar itself using something like:
    # import_file(module_name='foo.bar', ...)

    # Then in another module:
    import foo
    # This used to raise, as exekall incorrectly did not set "bar"
    # attribute on "foo" when importing it.
    print(foo.bar)

ARM-software/lisa,ARM-software/lisa,credp/lisa,credp/lisa,ARM-software/lisa,credp/lisa,credp/lisa,ARM-software/lisa