Treat errno 95 as non-ltfs destination (Fix #236)

[softloft38p-michael]

Summary of changes

This pull request includes following changes or fixes.

• Fix of issue #236

Description

This changes the behavior of ltfs_ordered_copy when xattr is not supported on the destination filesystem. Instead of failing the copy, it disables the -p flag and continues on without attempting to preserve attributes. Previously, users would be unable to copy to a non-ltfs filesystem that does not support xattr. Now, users can still perform the copy, but without the additional metadata added by -p.

Fixes #236

Type of change

• New feature (non-breaking change which adds functionality)
• This change migth require a documentation update

Checklist:

• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my own code
• [x] I have commented my code, particularly in hard-to-understand areas
• [x] I have made corresponding changes to the documentation
• [x] My changes generate no new warnings
• [x] I have confirmed my fix is effective or that my feature works

[piste-jp]

@softloft38p-michael ,

Thank you very much for your PR ! It looks great to me.