bin/.gitx: do not show up dir
bin/adb-bug: report a bug from adb
bin/adb-get-xy: be quiet
bin/adb-show-touches: firmware updated
bin/org-export.help: do not change emacs variables
bin/review-login: sleep longer
bin/screen-lock-off: ask user to confirm

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