This folder demos what happens when nonportable filenames are 
propagated to an exFAT proxy drive on Linux: all such files
are skipped with error messages in the logs and tallies in the 
console zip summaries.  

By contrast, macOS will silently munge them to/from Unicode 
privates which may have later consequences, but this allows 
them to leak out to Android in zips where they fail in shared.

Takeaway: when using a FAT32 or exFAT proxy drive on Linux, 
you'll usually want to run the name-fixer script, as the main
runs of this demo do.

See also the basic shared-storage demo for a simlar effect in 
Android shared storage.

NOTE: this example was not rerun for Mergeall 3.3, but it 
makes no difference in results, as deltas were not used.