ndk: minor update to <netinet/...> headers.

This patch contains a minor update to the netinet headers from the C library.
Most of the changes come from later platform release, but can be safely back-ported
to previous API levels since they don't change the ABI:

- <netinet/icmp6.h>, <netinet/ip6.h>: new headers
- <netinet/in.h>: now always include <linux/ipv6.h> by default
- <netinet/in6.h>: add macros: IN6_IS_ADDR_ULA, IN6ADDR_LOOPBACK_INIT
- <netinet/ip.h>: add macro: IPTOS_MINCOST
- <net/if_ether.h>: always include <sys/types.h> by default.

Change-Id: Icaf38205389d2b49f0e9235c07df752da01a0167

ndk/platforms/android-3/include/netinet/in6.h

@@ -60,6 +60,10 @@
 #define IN6_IS_ADDR_SITELOCAL(a)	\
 	(((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0xc0))
 
+/* RFC 4193. */
+#define IN6_IS_ADDR_ULA(a)	\
+	(((a)->s6_addr[0] & 0xfe) == 0xfc)
+
 #define IN6_IS_ADDR_MULTICAST(a)	\
 	(((__const uint8_t *) (a))[0] == 0xff)
 
@@ -99,6 +103,7 @@
 #define IPV6_LEAVE_GROUP IPV6_DROP_MEMBERSHIP
 
 #define IN6ADDR_ANY_INIT {{{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}}}
+#define IN6ADDR_LOOPBACK_INIT {{{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1}}}
 
 #define ipv6mr_interface ipv6mr_ifindex