toolkit: 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.

Change-Id: Ib10659fbd430b96edbad67e779ce4c12b7eeaa5d
Reviewed-on: https://gerrit.libreoffice.org/58054
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>

include/toolkit/controls/dialogcontrol.hxx

@@ -170,6 +170,11 @@ public:
     UnoMultiPageModel( const css::uno::Reference< css::uno::XComponentContext >& rxContext );
     virtual ~UnoMultiPageModel() override;
 
+    UnoMultiPageModel(UnoMultiPageModel const &) = default;
+    UnoMultiPageModel(UnoMultiPageModel &&) = default;
+    UnoMultiPageModel & operator =(UnoMultiPageModel const &) = default;
+    UnoMultiPageModel & operator =(UnoMultiPageModel &&) = default;
+
     rtl::Reference<UnoControlModel> Clone() const override;
 
     DECLIMPL_SERVICEINFO_DERIVED( UnoMultiPageModel, ControlModelContainerBase, "com.sun.star.awt.UnoMultiPageModel" )
@@ -244,6 +249,11 @@ public:
     UnoPageModel( const css::uno::Reference< css::uno::XComponentContext >& rxContext );
     virtual ~UnoPageModel() override;
 
+    UnoPageModel(UnoPageModel const &) = default;
+    UnoPageModel(UnoPageModel &&) = default;
+    UnoPageModel & operator =(UnoPageModel const &) = default;
+    UnoPageModel & operator =(UnoPageModel &&) = default;
+
     rtl::Reference<UnoControlModel> Clone() const override;
 
     DECLIMPL_SERVICEINFO_DERIVED( UnoPageModel, ControlModelContainerBase, "com.sun.star.awt.UnoPageModel" )
@@ -277,6 +287,11 @@ public:
     UnoFrameModel( const css::uno::Reference< css::uno::XComponentContext >& rxContext );
     virtual ~UnoFrameModel() override;
 
+    UnoFrameModel(UnoFrameModel const &) = default;
+    UnoFrameModel(UnoFrameModel &&) = default;
+    UnoFrameModel & operator =(UnoFrameModel const &) = default;
+    UnoFrameModel & operator =(UnoFrameModel &&) = default;
+
     rtl::Reference<UnoControlModel> Clone() const override;
 
     DECLIMPL_SERVICEINFO_DERIVED( UnoFrameModel, ControlModelContainerBase, "com.sun.star.awt.UnoFrameModel" )

toolkit/source/controls/spinningprogress.cxx

@@ -34,6 +34,11 @@ class SpinningProgressControlModel : public SpinningProgressControlModel_Base
 public:
     explicit SpinningProgressControlModel( css::uno::Reference< css::uno::XComponentContext > const & i_factory );
 
+    SpinningProgressControlModel(SpinningProgressControlModel const &) = default;
+    SpinningProgressControlModel(SpinningProgressControlModel &&) = default;
+    SpinningProgressControlModel & operator =(SpinningProgressControlModel const &) = default;
+    SpinningProgressControlModel & operator =(SpinningProgressControlModel &&) = default;
+
     virtual rtl::Reference<UnoControlModel> Clone() const override;
 
     // XPropertySet