cocoa tooltips. Remove runtime warning from 10.2 (dave - I was too lazy to change this from my local copy, feel free to commit over this if you want)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@29686 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/latex/wx/tooltip.tex

@@ -26,6 +26,8 @@ alter tooltips behaviour.
 
 Enable or disable tooltips globally.
 
+May not be supported on all platforms (eg. wxCocoa).
+
 
 \membersection{wxToolTip::SetDelay}\label{wxtooltipsetdelay}
 
@@ -33,6 +35,7 @@ Enable or disable tooltips globally.
 
 Set the delay after which the tooltip appears.
 
+May not be supported on all platforms (eg. wxCocoa).
 
 \membersection{wxToolTip::wxToolTip}\label{wxtooltipwxtooltip}