src: refactored name resolvers

* added classes that represent different name kinds
* rewrote NameResolvers to return the new name classes instead of NameElement and NameHierarchy
* removed DataType classes since their functionality moved to the CxxTypeName class.

src/lib/data/name/NameElement.cpp

@@ -38,7 +38,7 @@ std::string NameElement::Signature::qualifyName(const std::string& name) const
 	}
 
 	std::string qualifiedName = m_prefix;
-	if (name.size() > 0)
+	if (!name.empty())
 	{
 		if (!m_prefix.empty())
 		{