[PATCH 1/6 v2] msvcrt: Import fmod implementation from musl.

[Piotr Caban]

Signed-off-by: Piotr Caban 
---
v2:
  - don't call matherr in remquo (only patches 5 and 6 were changed)

dlls/msvcrt/math.c    | 64 +++++++++++++++++++++++++++++++++++++++++--
  dlls/msvcrt/unixlib.c |  9 ------
  dlls/msvcrt/unixlib.h |  1 -
  3 files changed, 61 insertions(+), 13 deletions(-)