Update to kernel headers v4.7.2.

Modify the kernel header update script to rename C++ keyword
struct members to something else. This fixes problems when including
these kernel files in C++ code.

Also, make a manual change to linux/fib_rules.h and comment out the
value FRA_PAD since it conflicts with a special android kernel value
FRA_UID_START that has not been upstreamed yet.

Test: Built aosp_angler, aosp_x86_64, aosp_mips (bionic only)
Test: Booted on angler and ran bionic unit tests
Test: Built these changes in internal master

Change-Id: Ia22b7e3ca409404696dba76311f49157f4a9ceed
diff --git a/libc/kernel/uapi/linux/ip_vs.h b/libc/kernel/uapi/linux/ip_vs.h
index 2971861..97a9c21 100644
--- a/libc/kernel/uapi/linux/ip_vs.h
+++ b/libc/kernel/uapi/linux/ip_vs.h
@@ -326,16 +326,18 @@
   IPVS_STATS_ATTR_INBPS,
   IPVS_STATS_ATTR_OUTBPS,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  IPVS_STATS_ATTR_PAD,
   __IPVS_STATS_ATTR_MAX,
 };
 #define IPVS_STATS_ATTR_MAX (__IPVS_STATS_ATTR_MAX - 1)
-enum {
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+enum {
   IPVS_INFO_ATTR_UNSPEC = 0,
   IPVS_INFO_ATTR_VERSION,
   IPVS_INFO_ATTR_CONN_TAB_SIZE,
-  __IPVS_INFO_ATTR_MAX,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  __IPVS_INFO_ATTR_MAX,
 };
 #define IPVS_INFO_ATTR_MAX (__IPVS_INFO_ATTR_MAX - 1)
 #endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */