[patch] Fix FFT macros when neutral_acconfig = n

[Jules Bergmann]

This patch avoids defining VSIP_IMPL_FFTW3_HAVE_{TYPE} when TYPE is not 
supported.  This is necessary since the macro users check for definition 
(#ifdef).

Patch applied.

				-- Jules

-- 
Jules Bergmann
CodeSourcery
jules at codesourcery.com
(650) 331-3385 x705
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