[ 1578529 ] better docs for reference-counted objects

This already includes the change for wxBitmap, which
  is not COW yet.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@42094 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/latex/wx/topics.tex

@@ -4,13 +4,14 @@
 
 This chapter contains a selection of topic overviews.
 
-\input tchanges.tex
+%\input tchanges.tex  --  deprecated: look at docs/changes.txt instead
 \input tusage.tex
 \input tguide.tex
 \input hworld.tex
 \input tsamples.tex
 \input tapp.tex
 \input truntime.tex
+\input trefcount.tex
 \input tstring.tex
 \input tbuffer.tex
 \input tdate.tex
@@ -66,4 +67,3 @@ This chapter contains a selection of topic overviews.
 \input re_syntax.tex
 \input arc.tex
 \input backwardcompat.tex
-