add modeOctalString to FileStat for compatibility with Posix tools

[stephane-archer]

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add modeOctalString to FileStat for compatibility with Posix tools

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[mraleph]

Thanks for the PR but this is just an equivalent to stat.mode.toRadixString(8). I don't think there is any need to add it as a separate method. Also it is a breaking change for anything implementing the FileStat class.

[stephane-archer]

I was not aware of "stat.mode.toRadixString(8)" is it exactly equivalent?

[mraleph]

I guess you might also need to mask things if you don't care about top bits: (stat.mode & 0x1FF).toRadixString(8)