am 2e236c13: am 17edd38f: am 9c9b0fc7: Merge "libm: cherry-pick one patch from freebsd to fix logb() denormals issue"

* commit '2e236c132fe38e52d8a52d264cca5c520d778c98':
  libm: cherry-pick one patch from freebsd to fix logb() denormals issue