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/inet_diag.h b/libc/kernel/uapi/linux/inet_diag.h
index d904418..9ebba1c 100644
--- a/libc/kernel/uapi/linux/inet_diag.h
+++ b/libc/kernel/uapi/linux/inet_diag.h
@@ -121,8 +121,13 @@
   INET_DIAG_PROTOCOL,
   INET_DIAG_SKV6ONLY,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  INET_DIAG_LOCALS,
+  INET_DIAG_PEERS,
+  INET_DIAG_PAD,
+  __INET_DIAG_MAX,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
-#define INET_DIAG_MAX INET_DIAG_SKV6ONLY
+#define INET_DIAG_MAX (__INET_DIAG_MAX - 1)
 struct inet_diag_meminfo {
   __u32 idiag_rmem;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */