`MatchPattern` for regular-file and directory as target can now match
subdirectories This is useful to install files for examples in `.extra.d`
directories:
```
[Target]
Type=regular-file
Path=/EFI/Linux
PathRelativeTo=boot
MatchPattern=gnomeos_@v.efi.extra.d/apparmor.addon.efi
```
The if the directories in the path do not exist, they will be created. Whereas
the part in `Path` is not created.
While we are at it, replace the sloppy use of filename_is_valid() by the
less sloppy filename_part_is_valid() (as added by the preceeding
commit), since we don#t want to be too restrictive here. (After all,
version strings invalid as standalone filenames might be valid as part
of filenames, and hence we should allow them).
Unfortunately, hex output can only be produced with unsigned types. Some
cases can be fixed by producing the correct type, but a few simply have
to be cast. At least casting makes it explicit.
Mike Yuan
Valentin David
David Tardon
Lennart Poettering
Jan Janssen
Zbigniew Jędrzejewski-Szmek