[Snek] [keith-packard/snek] 546635: windows: Add math functions to Windows native build

[Keith Packard]

  Branch: refs/heads/master
  Home:   https://github.com/keith-packard/snek
  Commit: 5466359e50fa442147706e6f4e92e8ca69ed36ec
      https://github.com/keith-packard/snek/commit/5466359e50fa442147706e6f4e92e8ca69ed36ec
  Author: Keith Packard <keithp at keithp.com>
  Date:   2019-04-13 (Sat, 13 Apr 2019)

  Changed paths:
    M snek-math.c
    M windows/Makefile

  Log Message:
  -----------
  windows: Add math functions to Windows native build

Signed-off-by: Keith Packard <keithp at keithp.com>