#1535 Add Support for Windows Backup Zip Archive Sequences

[Raccoon]

Windows Backup (in Windows 7 at least) stores all backed up files into a series of sequenced Zip files. The naming of the sequence is thus:

Backup files 1.zip
Backup files 2.zip
...
Backup files 9.zip
Backup files 10.zip
Backup files 11.zip
...
Backup files 99.zip
Backup files 100.zip
Backup files 101.zip

and so on.

It would be lovely if 7-Zip could open the file index for all of these stand-alone zip files, combined, so that I don't have to open each zip file one at a time to locate the file(s) I want to extract. In avoidance of using Window's all-or-nothing backup restore system.