added wxBU_EXACTFIT style

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@10942 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/latex/wx/button.tex

@@ -24,6 +24,7 @@ almost any other window.
 \twocolitem{\windowstyle{wxBU\_TOP}}{Aligns the label to the top of the button. WIN32 only.}
 \twocolitem{\windowstyle{wxBU\_RIGHT}}{Right-justifies the bitmap label. WIN32 only.}
 \twocolitem{\windowstyle{wxBU\_BOTTOM}}{Aligns the label to the bottom of the button. WIN32 only.}
+\twocolitem{\windowstyle{wxBU\_EXACTFIT}}{Creates the button as small as possible instead of making it of the standard size (which is the default behaviour ).}
 \end{twocollist}
 
 See also \helpref{window styles overview}{windowstyles}.