File vala-panel-extras-fix-xkb-build.patch of Package vala-panel-extras

--- a/applets/xkb/CMakeLists.txt
+++ b/applets/xkb/CMakeLists.txt
@@ -30,6 +30,7 @@
 # Build library for plugin
 set (LIBS ${CORE_LIBRARIES} ${XKB_LIBRARIES} ${X11_LIBRARIES})
 set (LIB_PATHS ${CORE_LIBRARY_DIRS} ${XKB_LIBRARY_DIRS} ${X11_LIBRARY_DIRS})
+include_directories(${CORE_INCLUDE_DIRS} ${XKB_INCLUDE_DIRS} ${X11_INCLUDE_DIRS})
 link_directories (${LIB_PATHS})
 add_executable (vala-panel-extras-${PLUGIN_NAME}
     ${VALA_C}