13552 fs.d: multiply-defined symbols
Reviewed by: Gerg&#337; Mih&#225;ly Doma <domag02@gmail.com>
Reviewed by: Andy Fiddaman <andy@omnios.org>
Approved by: Dan McDonald <danmcd@joyent.com>

6268975 cmd/backup and gcc don't get along
6271135 gcc and cmd/fs.d/udfs don't get along
6273816 gcc and cmd/rmt don't get along

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