Add wxUSE_NATIVE_DATAVIEWCTRL build option

It defaults to 1, but can be set to 0 to force using the generic version
of the control even under GTK or Mac, where the native version is used
by default.

This can, unfortunately, be useful to work around various but multiple
native control limitations.

docs/doxygen/mainpages/const_cpp.h

@@ -185,6 +185,7 @@ Currently the following symbols exist:
     decide whether some function should be overloaded for both
     <code>long</code> and <code>long long</code> types.}
 @itemdef{wxHAS_MULTIPLE_FILEDLG_FILTERS, Defined if wxFileDialog supports multiple ('|'-separated) filters.}
+@itemdef{wxHAS_NATIVE_DATAVIEWCTRL, Defined if native wxDataViewCtrl class is being used (this symbol only exists in wxWidgets 3.1.4 and later).}
 @itemdef{wxHAS_NATIVE_WINDOW, Defined if wxNativeWindow class is available.}
 @itemdef{wxHAS_IMAGES_IN_RESOURCES, Defined if <a href="http://en.wikipedia.org/wiki/Resource_(Windows)">
     Windows resource files</a> or OS/2 resource files are available on the current platform.}

docs/doxygen/mainpages/const_wxusedef.h

@@ -175,6 +175,7 @@ library:
 @itemdef{wxUSE_MINIFRAME, Use wxMiniFrame class.}
 @itemdef{wxUSE_MOUSEWHEEL, Support mouse wheel events.}
 @itemdef{wxUSE_MSGDLG, Use wxMessageDialog class and wxMessageBox function.}
+@itemdef{wxUSE_NATIVE_DATAVIEWCTRL, Use native wxDataViewCtrl class (this option is new since wxWidgets 3.1.4).}
 @itemdef{wxUSE_NATIVE_STATUSBAR, Use native wxStatusBar class.}
 @itemdef{wxUSE_NOTEBOOK, Use wxNotebook and related classes.}
 @itemdef{wxUSE_NUMBERDLG, Use wxNumberEntryDialog class.}