- update to 3.3.10:
  * Fix bug that would cause 2-way SIMD (notably SSE2 in double precision)
    to attempt unaligned accesses in certain obscure cases, causing
    segfaults.
  * This test computes a pair of length-4 real->complex transforms where
    the second input is 5 real numbers away from the first input.  That
    is, there is a gap of one real number between the first and second
    input array.  The -oexhaustive level allow FFTW to attempt to
    compute this transform by reducing it to a pair of complex
    transforms of length 2, but now the second input is not aligned to a
    complex-number boundary.  The fact that 5 is odd is the problem.
  * The bug cannot occur in complex->complex transforms because the
    complex interface accepts strides in units of complex numbers, so
    strides are aligned by construction.

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