[PATCH 2/4 v3] msvcrt: Import _logbf implementation from musl.

[Piotr Caban]

Signed-off-by: Piotr Caban 
---
  dlls/msvcrt/math.c    | 49 +++++++++++++++++++++++++------------------
  dlls/msvcrt/unixlib.c |  9 --------
  dlls/msvcrt/unixlib.h |  1 -
  3 files changed, 29 insertions(+), 30 deletions(-)