add win32 tun glue, fix llarp timebase
(In fact, _both_ of these are guaranteed to exist on their respective platforms.)
also, tuntap is now wired up to the windows port
SunOS build works, with a few issues:
- no tuntap debugging on Solaris? (TUNSDEBUG ioctl missing)
- regular socket ioctls are not pulled in with #include <sys/ioctl.h>
even though they're included at the bottom of same (filio.h,
sockio.h)
- no named threads in any libre fork of solaris
-despair86 (rick)
sun patch
