[patch] Fftm diagnostics, misc cleanup & FFTW fix for powerpc-eabi

[Jules Bergmann]

These patches:
  - Add Fftm diagnostics
  - Cleanup vendor libs from lib/ directory
  - Fix fft and fftm benchmarks to compile when double-precision
    FFTs aren't supported
  - Add hook to FFTW3 to work around unimplemented gettimeofday/clock
    functions in the windows powerpc-eabi simulator.

Ok to apply?

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