[PATCH 4/6] msvcrt: Import erff implementation from musl.

[Piotr Caban]

Signed-off-by: Piotr Caban 
---
  configure.ac          |  1 -
  dlls/msvcrt/math.c    | 42 +++++++++++++++++++++++++++++++++++++++++-
  dlls/msvcrt/unixlib.c | 13 -------------
  dlls/msvcrt/unixlib.h |  1 -
  4 files changed, 41 insertions(+), 16 deletions(-)