missing button.h header

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_2_BRANCH@7589 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/generic/helpwxht.cpp

@@ -28,6 +28,7 @@
 #   include "wx/intl.h"
 #   include "wx/layout.h"
 #   include "wx/combobox.h"
+#   include "wx/button.h"
 #endif
 
 #include "wx/helpbase.h"

src/generic/logg.cpp

@@ -42,6 +42,7 @@
     #include "wx/textctrl.h"
     #include "wx/sizer.h"
     #include "wx/statbmp.h"
+    #include "wx/button.h"
 #endif // WX_PRECOMP
 
 #include "wx/file.h"

src/generic/panelg.cpp

@@ -34,6 +34,8 @@
     #include "wx/colour.h"
     #include "wx/settings.h"
     #include "wx/log.h"
+    #include "wx/toolbar.h"
+    #include "wx/statusbr.h"
 #endif
 
 #include "wx/generic/panelg.h"