pxar: Change text of warning for files matched by exclude patterns.

In addition to the .pxarexclude files, glob match patterns can be passed to pxar
also via cli parameters.
Therefore the warning is rephrased to be more ambiguous.

Signed-off-by: Christian Ebner <c.ebner@proxmox.com>

src/pxar/encoder.rs

@@ -758,7 +758,7 @@ impl<'a, W: Write, C: BackupCatalogWriter> Encoder<'a, W, C> {
                     (MatchType::Positive, _) => {
                         let filename_osstr = std::ffi::OsStr::from_bytes(filename.to_bytes());
                         eprintln!(
-                            "matched by .pxarexclude entry - skipping: {:?}",
+                            "matched by exclude pattern - skipping: {:?}",
                             self.full_path().join(filename_osstr)
                         );
                     }