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/sched.h b/libc/kernel/uapi/linux/sched.h
index d87bc2a..2d11898 100644
--- a/libc/kernel/uapi/linux/sched.h
+++ b/libc/kernel/uapi/linux/sched.h
@@ -39,22 +39,23 @@
 #define CLONE_DETACHED 0x00400000
 #define CLONE_UNTRACED 0x00800000
 #define CLONE_CHILD_SETTID 0x01000000
-#define CLONE_NEWUTS 0x04000000
+#define CLONE_NEWCGROUP 0x02000000
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define CLONE_NEWUTS 0x04000000
 #define CLONE_NEWIPC 0x08000000
 #define CLONE_NEWUSER 0x10000000
 #define CLONE_NEWPID 0x20000000
-#define CLONE_NEWNET 0x40000000
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define CLONE_NEWNET 0x40000000
 #define CLONE_IO 0x80000000
 #define SCHED_NORMAL 0
 #define SCHED_FIFO 1
-#define SCHED_RR 2
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define SCHED_RR 2
 #define SCHED_BATCH 3
 #define SCHED_IDLE 5
 #define SCHED_DEADLINE 6
-#define SCHED_RESET_ON_FORK 0x40000000
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define SCHED_RESET_ON_FORK 0x40000000
 #define SCHED_FLAG_RESET_ON_FORK 0x01
 #endif