Partial extraction of an archive with a glob pattern, e.g. '**/*.conf' lead to
the unexpected behaviour of restoring all partially matched directories (in this
example all of them).
This patch fixes this unexpected behaviour by only restoring those directories
were the directory or one of its sub-items fully matched the pattern and should
therefore be restored.
To achive this behavoiur, directory metadata is pushed onto a stack and restored
on demand.
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
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