This pull request makes it possible to compile ewpcap on Windows.
The project was successfully compiled on Windows 7 using rebar and cl compiler and on OS X using rebar and gcc. There had to be changed the first line in Makefile on Windows though (REBAR=./rebar).
attempt to port ewpcap to Windows
corrected DWIN32 in rebar.config
Merge pull request #4 from jur0/windows_port