NAT/Network: Add missing Id/@file/copyright headers.

scm automatic cleanups.

NAT/Net: convert perror/warn/warnx to DPRINTFs.

NAT/Net: Start untangling errno vs. winsock mess. Don't refer errno directly, while here convert some perror() calls to DPRINTFs.

NAT/Net: #define LOG_GROUP LOG_GROUP_NAT_SERVICE

Don't schedule pxdns_timer() if we don't have any active requests.

On Windows getsockopt() takes char *, not void * - add cast to pacify compiler

G/c unused variable.

pxdns_create_resolver_sockaddrs: enable getaddrinfo() code on Windows too

NATNetwork: localize windows' headers inclusion.

As a stopgap measure #include <ws2tcpip.h> here (should be moved to winutils.h and other local headers cleaned).

#include <stdio.h>

Finish DNS proxy code and hook it in.

Change vestigial names proxytest.* to proxy.*

NetworkServices: Whitespace (including tabs!) and svn:keywords cleanups by scm.

Move proxy sources from Devices/Network/lwip-new/vbox to NetworkServices/NAT where they belong.