[Patch] Allows tun_mainloop to handle multiple packets in single read.

[Antonio Borneo]

Also vpnc project uses getmsg(2) for Solaris and read(2) for the other
cases while read from tun.
File sysdep.c
http://svn.unix-ag.uni-kl.de/vpnc/trunk/sysdep.c

Best Regards,
Antonio Borneo