[issue1321] dma(8): portability fixes and extended functionality

["Simon 'corecode' Schubert \(via DragonFly issue tracker\)" <sinknull@xxxxxxxxxxxxxxxxxxxxx>]

Simon 'corecode' Schubert <corecode@fs.ei.tum.de> added the comment:

I've committed most of the patches.  However I had to change and fix several of
them.

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status: unread -> resolved

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