update bakefile to 0.2.6

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@60319 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

samples/opengl/penguin/penguin.dsp

@@ -267,6 +267,22 @@ SOURCE=.\penguin.rc
 SOURCE=.\trackball.c
 # End Source File
 # End Group
+# Begin Group "Header Files"
+
+# PROP Default_Filter ""
+# Begin Source File
+
+SOURCE=.\dxfrenderer.h
+# End Source File
+# Begin Source File
+
+SOURCE=.\penguin.h
+# End Source File
+# Begin Source File
+
+SOURCE=.\trackball.h
+# End Source File
+# End Group
 # End Target
 # End Project