This version of pylint tries to import the C modules for analysis and
get confused by support ffi's CompiledFFI type.

Use our utility  _register_module_extender_from_live_module to register
a stub module instead.

This also reverts b21f83fc,
"BusinessTemplate_getPythonSourceCodeMessageList: Retry in case of
pylint internal failure." which is no longer necessary with these
changes.