Previously the usage of the yaml_dumps module was causing
any python unicode key and value to show up as:
'item': !!python/unicode "some string"
This was not very pretty...
Fix this by using safe_dumps (which is also a good thing to
use and allow_unicode=True). Also create a tiny helper function
in the cc_debug module that does not include the yaml start and
end footers (since this module has its own footers and headers).
Also includes a basic sanity test for this module.
7e7ce81fb8