[UPDATE] math/udunits

[remi . pointel]

Hello,

I'm the maintainer of this port and a new version has been released (2.1.17 -> 
2.1.18). I have switched to newer LIB_DEPENDS/WANTLIB.
Can someone update this port please ?

Thanks a lot,

--
Remi.

udunits-2.1.18.diff
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