Create box_help

please set execute permission
Thank you
send helptext to /usr/lib/gtkdialog/box_help
Update bcrypt_gui_help
Update xdelta_gui
Update bootmanager
update /init.d/readme.txt to wrap instead of newlines
Merge pull request #233 from zigbert/patch-1

use /usr/lib/gtkdialog/box_help to unify help-text