Fix #1661 about verify differences with VERIFY_VOLUME_TO_CATALOG
Fix #1661 about verify differences with VERIFY_VOLUME_TO_CATALOG

In L_VERIFY_VOLUME_TO_CATALOG, it needs to check every FileIndex to ensure
that the catalog is in the same order as the volume.  That also correctly
handles duplicate names, which have different values for FileIndex.

This bug was introduced when fixing #1524

rkorzeniewski/bacula,rkorzeniewski/bacula,rkorzeniewski/bacula,rkorzeniewski/bacula,rkorzeniewski/bacula,rkorzeniewski/bacula,rkorzeniewski/bacula,rkorzeniewski/bacula