Applied patches for #15184 (wxRichTextAction fix for when the command identifier is wxRICHTEXT_CHANGE_OBJECT) and #15185 (Make adding/deleting wxRichTextTable rows and columns undoable)


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@73941 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775