-fPIC and x86_64

[Orion Poplawski]

I've gotten a request to build hdf with -fPIC because apparently when 
trying to build other packages that use it on x86_64 they complain.  hdf 
only provides static libs.

Is this the appropriate fix?

-- 
Orion Poplawski
System Administrator                   303-415-9701 x222
Colorado Research Associates/NWRA      FAX: 303-415-9702
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