gvfs string break request

[Alexander Larsson <alexl redhat com>]

I'd like to request permission for a string break for:
http://bugzilla.gnome.org/show_bug.cgi?id=517460 - sftp backend doesn't
handle host identity messages

It has 5 new string related to the dialog show when connecting to a sftp
share that has changed key. Most of the strings are identical to the
ones in gnome-vfs, so should be easy to translate.