Kevin DCR 287652573b
Fix and refactor cd for Filesystem Shell. (#1452)
* Fix and refactor cd for Filesystem Shell.
Reorder check conditions, don't check existence twice.
If building for unix check exec bit on folder.

* Import PermissionsExt only on unix target.

* It seems that this is the correct way?
2020-03-06 20:13:47 +13:00
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