use --one-file-system (as "du" tool does) instead of --do-not-cross-mountpoints
use --one-file-system (as "du" tool does) instead of --do-not-cross-mountpoints

the old name still works, but emits a deprecation warning suggesting the new name.

this is a followup to 4fd06e2634e9583762606eae0f27a6a569afcd60, which added "-x" (as seen in "du").

edgimar/borg,mhubig/borg,mhubig/borg,raxenak/borg,edgewood/borg,RonnyPfannschmidt/borg,raxenak/borg,edgimar/borg,edgimar/borg,raxenak/borg,edgewood/borg,RonnyPfannschmidt/borg,edgewood/borg,edgewood/borg,RonnyPfannschmidt/borg,RonnyPfannschmidt/borg,RonnyPfannschmidt/borg,mhubig/borg,raxenak/borg,edgimar/borg