Forgot to remove debug code in UnixSignalHandler
Fixed typos in {lazyevaluation,metaobject,templateengine}.hpp
Introducing RuntimeMetaObject and JsonMetaObjectReader!

Using RuntimeMetaObject one can easily create Nuria::MetaObjects at
runtime. The class is used by the also new JsonMetaObjectReader, which
can parse the JSON output generated by Tria (-json-output=..) and turn
it into a Nuria::MetaObject again (Of course some things are missing,
the resulting MetaObject is most useful for information gathering and
can not be used to e.g. create instances of the type for real.)