[vsipl++] [patch] more FFTW cleanup

[Jules Bergmann]

Nathan (Jasper) Myers wrote:
> This is another (non-minimal) try at making "make clean" clear out 
> fftw libs.  It also fixes a typo in tests/fft.cpp that we hadn't
> tripped on yet.  Tested on sethra.
> 
> OK to commit?

Looks good.  Please check it in.

Good catch on the FFT bug.  Can you extend fft.cpp to cover the double 
precision FFTs as well.

				-- Jules