- Add scope id to ipv6 addresses.

- Clean up a few other ipv6 issues like removing the seemingly unnecessary MacOSX workaround.
- Bring ipv6 master server up to speed for dpmaster

Thanks go out to Mathieu Olivier for this work.

code/qcommon/qcommon.h

@@ -155,6 +155,7 @@ typedef struct {
 	byte	ip6[16];
 
 	unsigned short	port;
+	unsigned long	scope_id;	// Needed for IPv6 link-local addresses
 } netadr_t;
 
 void		NET_Init( void );