Added #ifdefs to functions that are only works in X

Added #ifdefs to functions that are only works in X

Added #ifdefs to functions that are only works in X so they are not compiled.
These functions make calls to libslp-utilx and ecore_x library that either segfaults or
do not work properly when running in wayland, they include:
set_notification(), _unset_notification_level(), _set_launch_effect(), _key_grab()

Signed-off-by: Jimmy Huang <jimmy.huang@intel.com>