codemaker: avoid -Werror=deprecated-copy (GCC trunk towards GCC 9)

...by explicitly defaulting the copy/move functions (and, where needed in turn,
also a default ctor) for classes that have a user-declared dtor that does
nothing other than an implicitly-defined one would do, but needs to be user-
declared because it is virtual and potentially serves as a key function to
emit the vtable, or is non-public, etc.  (For LIBO_INTERNAL_ONLY, in cppumaker-
genered code.)

Change-Id: Ia13d945c10600f5793a3247f85a464170ede483d
Reviewed-on: https://gerrit.libreoffice.org/58116
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>

codemaker/source/cppumaker/cpputype.cxx

@@ -1162,6 +1162,12 @@ void InterfaceType::dumpDeclaration(FileStream & out)
     }
     out << "\n{\npublic:\n";
     inc();
+    out << "#if defined LIBO_INTERNAL_ONLY\n"
+        << indent() << id_ << "() = default;\n"
+        << indent() << id_ << "(" << id_ << " const &) = default;\n"
+        << indent() << id_ << "(" << id_ << " &&) = default;\n"
+        << indent() << id_ << " & operator =(" << id_ << " const &) = default;\n"
+        << indent() << id_ << " & operator =(" << id_ << " &&) = default;\n#endif\n\n";
     dumpAttributes(out);
     dumpMethods(out);
     out << "\n" << indent()