Optimized sizers to not call CalcMin more often than neccessary

Window items added with wxFIXED_MINSIZE flag will set the window's
minsize to its curent size.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@28012 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

wxPython/src/_sizers.i

@@ -127,6 +127,11 @@ account.", "");
         wxSize , GetMinSize(),
         "Get the minimum size needed for the item.", "");
     
+    DocDeclStr(
+        wxSize , GetMinSizeWithBorder() const,
+        "Get the minimum size needed for the item with space for the borders
+added, if needed.", "");
+
     DocDeclStr(
         void , SetInitSize( int x, int y ),
         "", "");