Add support for Borg 2's "--match-archives" flag (replaces "--glob-archives") (#591).

scripts/find-unsupported-borg-options

@@ -53,6 +53,7 @@ for sub_command in prune create check list info; do
             | grep -v '^--first' \
             | grep -v '^--format' \
             | grep -v '^--glob-archives' \
+            | grep -v '^--match-archives' \
             | grep -v '^--last' \
             | grep -v '^--format' \
             | grep -v '^--patterns-from' \