Added exclusions for dirs prior to main loop

[jmaddington]

On macOS cloud applications such as OneDrive can be set to download files on demand. If these folders are not excluded prior to the scan the file will be downloaded even if it is will be excluded in the next step, this prevents that.

Added another exclusion layer to skip matched directories defined in EXCLUDED_OUTER_DIRS before if [ -f "${file_path}" ]; then