Add cross-version remapped merges to xl-meta (#19765)

Adds `-xver` which can be used with `-export` and `-combine` to attempt to combine files across versions if data is suspected to be the same. Overlapping data is compared.

Bonus: Make `inspect` accept wildcards.

docs/debugging/inspect/main.go

@@ -31,6 +31,8 @@ import (
 	"os"
 	"strings"
 	"time"
+
+	"github.com/klauspost/filepathx"
 )
 
 var (
@@ -68,7 +70,7 @@ func main() {
 		}
 	}
 
-	var inputFileName, outputFileName string
+	var inputs []string
 
 	// Parse parameters
 	switch {
@@ -83,22 +85,34 @@ func main() {
 			fatalErr(err)
 		}
 		fatalErr(json.Unmarshal(got, &input))
-		inputFileName = input.File
+		inputs = []string{input.File}
 		*keyHex = input.Key
 	case len(flag.Args()) == 1:
-		inputFileName = flag.Args()[0]
+		var err error
+		inputs, err = filepathx.Glob(flag.Args()[0])
+		fatalErr(err)
 	default:
 		flag.Usage()
 		fatalIf(true, "Only 1 file can be decrypted")
 		os.Exit(1)
 	}
+	for _, input := range inputs {
+		processFile(input, privateKey)
+	}
+}
 
+func processFile(inputFileName string, privateKey []byte) {
 	// Calculate the output file name
+	var outputFileName string
 	switch {
 	case strings.HasSuffix(inputFileName, ".enc"):
 		outputFileName = strings.TrimSuffix(inputFileName, ".enc") + ".zip"
 	case strings.HasSuffix(inputFileName, ".zip"):
 		outputFileName = strings.TrimSuffix(inputFileName, ".zip") + ".decrypted.zip"
+	case strings.Contains(inputFileName, ".enc."):
+		outputFileName = strings.Replace(inputFileName, ".enc.", ".", 1) + ".zip"
+	default:
+		outputFileName = inputFileName + ".decrypted"
 	}
 
 	// Backup any already existing output file