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/eventpoll.h b/libc/kernel/uapi/linux/eventpoll.h
index 9f329f7..ec51b9f 100644
--- a/libc/kernel/uapi/linux/eventpoll.h
+++ b/libc/kernel/uapi/linux/eventpoll.h
@@ -26,19 +26,20 @@
 #define EPOLL_CTL_DEL 2
 #define EPOLL_CTL_MOD 3
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define EPOLLEXCLUSIVE (1 << 28)
 #define EPOLLWAKEUP (1 << 29)
 #define EPOLLONESHOT (1 << 30)
 #define EPOLLET (1 << 31)
-#ifdef __x86_64__
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#ifdef __x86_64__
 #define EPOLL_PACKED __attribute__((packed))
 #else
 #define EPOLL_PACKED
-#endif
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#endif
 struct epoll_event {
   __u32 events;
   __u64 data;
-} EPOLL_PACKED;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+} EPOLL_PACKED;
 #endif