#326 strtok_r() + resolv.conf parsing on Windows

[Gisle Vanem]

Seems the strtok_r() for parsing resolv.conf doesn't handle multiple spaces between e.g. "nameserver" and an IPv4-address. Running "sample/dns-example -c f:\Windows\system32\drivers\etc\resolv.conf ..." with "nameserver 8.8.8.8" doesn't work!

But "nameserver 8.8.8.8" works fine.

I'm on MSVC (Win-XP) and have no strtok_r().