Update kernel uapi headers to v3.16.1.

Other changes to support the new headers:

- Remove the flock64 structure it is defined in the new headers.
- Update the syscalls to correspond with the headers.

Change-Id: I49a6b07e8b2bfffb67be71b07b58e4e6848fcc09
diff --git a/libc/kernel/uapi/linux/tcp_metrics.h b/libc/kernel/uapi/linux/tcp_metrics.h
index 449ec95..1c36a55 100644
--- a/libc/kernel/uapi/linux/tcp_metrics.h
+++ b/libc/kernel/uapi/linux/tcp_metrics.h
@@ -29,38 +29,41 @@
  TCP_METRIC_SSTHRESH,
  TCP_METRIC_CWND,
  TCP_METRIC_REORDERING,
- __TCP_METRIC_MAX,
+ TCP_METRIC_RTT_US,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ TCP_METRIC_RTTVAR_US,
+ __TCP_METRIC_MAX,
 };
 #define TCP_METRIC_MAX (__TCP_METRIC_MAX - 1)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 enum {
  TCP_METRICS_ATTR_UNSPEC,
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  TCP_METRICS_ATTR_ADDR_IPV4,
  TCP_METRICS_ATTR_ADDR_IPV6,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  TCP_METRICS_ATTR_AGE,
  TCP_METRICS_ATTR_TW_TSVAL,
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  TCP_METRICS_ATTR_TW_TS_STAMP,
  TCP_METRICS_ATTR_VALS,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  TCP_METRICS_ATTR_FOPEN_MSS,
  TCP_METRICS_ATTR_FOPEN_SYN_DROPS,
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  TCP_METRICS_ATTR_FOPEN_SYN_DROP_TS,
  TCP_METRICS_ATTR_FOPEN_COOKIE,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  TCP_METRICS_ATTR_SADDR_IPV4,
  TCP_METRICS_ATTR_SADDR_IPV6,
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __TCP_METRICS_ATTR_MAX,
 };
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define TCP_METRICS_ATTR_MAX (__TCP_METRICS_ATTR_MAX - 1)
 enum {
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  TCP_METRICS_CMD_UNSPEC,
  TCP_METRICS_CMD_GET,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  TCP_METRICS_CMD_DEL,
  __TCP_METRICS_CMD_MAX,
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
 #define TCP_METRICS_CMD_MAX (__TCP_METRICS_CMD_MAX - 1)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif