.emacs_d/lisp/emojis.el: remove an empty line
bin/bbs-robot.exp: it will be killed if you don't add a &
bin/bbs-robot: do not mess up the screen
bin/bhj-okular: single instance
bin/grep-gtags: sometimes you need to do refresh with mkgtags
bin/notify-phone-crash: fix sudo, some details
etc/default-custom-gtags.sh: redo mkgtags to update

Signed-off-by: Bao Haojun <baohaojun@gmail.com>