forked from amazingfate/loongoffice
...by adding some further SAL_DLLPUBLIC_RTTI type annotations (cf. b4f6b26b5a1a78fecfa95ec2eb7ac8b80495d8aa "SAL_DLLPUBLIC_RTTI for proper RTTI visibility for LLVM") and by making sure relevant function types do not use incomplete types in their parameter and return types (which would make the RTTI hidden). Change-Id: Id7aadcbc0704b9759968ae36266fc9ce11a2e340