Log Message:
Changes 3.2:
* Worked around apparent glibc bug that leads to rare hangs when freeing
  semaphores.
* Fixed segfault due to unaligned access in certain obscure problems
  that use SSE and multiple threads.
* MPI transforms not included, as they are still in alpha; the alpha
  versions of the MPI transforms have been moved to FFTW 3.3alpha1.
* Performance improvements for sizes with factors of 5 and 10.
* Documented FFTW_WISDOM_ONLY flag, at the suggestion of Mario
  Emmenlauer and Phil Dumont.
* Port Cell code to SDK2.1 (libspe2), as opposed to the old libspe1 code.
* Performance improvements in Cell code for N < 32k, thanks to Jan Wagner
  for the suggestions.
* Cycle counter for Sun x86_64 compiler, and compilation fix in cycle
  counter for AIX/xlc (thanks to Jeff Haferman for the bug report).
* Fixed incorrect type prefix in MPI code that prevented wisdom routines
  from working in single precision (thanks to Eric A. Borisch for the report).
* Added 'make check' for MPI code (which still fails in a couple corner
  cases, but should be much better than in alpha2).
* Many other small fixes.