Switch kernel header parsing to python libclang

Replace the tokenizer in cpp.py with libclang.

Bug: 18937958
Change-Id: I27630904c6d2849418cd5ca3d3c612ec3078686d
diff --git a/libc/kernel/uapi/asm-generic/shmbuf.h b/libc/kernel/uapi/asm-generic/shmbuf.h
index 68b859d..6eb8b6a 100644
--- a/libc/kernel/uapi/asm-generic/shmbuf.h
+++ b/libc/kernel/uapi/asm-generic/shmbuf.h
@@ -21,43 +21,43 @@
 #include <asm/bitsperlong.h>
 struct shmid64_ds {
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- struct ipc64_perm shm_perm;
- size_t shm_segsz;
- __kernel_time_t shm_atime;
+  struct ipc64_perm shm_perm;
+  size_t shm_segsz;
+  __kernel_time_t shm_atime;
 #if __BITS_PER_LONG != 64
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- unsigned long __unused1;
+  unsigned long __unused1;
 #endif
- __kernel_time_t shm_dtime;
+  __kernel_time_t shm_dtime;
 #if __BITS_PER_LONG != 64
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- unsigned long __unused2;
+  unsigned long __unused2;
 #endif
- __kernel_time_t shm_ctime;
+  __kernel_time_t shm_ctime;
 #if __BITS_PER_LONG != 64
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- unsigned long __unused3;
+  unsigned long __unused3;
 #endif
- __kernel_pid_t shm_cpid;
- __kernel_pid_t shm_lpid;
+  __kernel_pid_t shm_cpid;
+  __kernel_pid_t shm_lpid;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- __kernel_ulong_t shm_nattch;
- __kernel_ulong_t __unused4;
- __kernel_ulong_t __unused5;
+  __kernel_ulong_t shm_nattch;
+  __kernel_ulong_t __unused4;
+  __kernel_ulong_t __unused5;
 };
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct shminfo64 {
- __kernel_ulong_t shmmax;
- __kernel_ulong_t shmmin;
- __kernel_ulong_t shmmni;
+  __kernel_ulong_t shmmax;
+  __kernel_ulong_t shmmin;
+  __kernel_ulong_t shmmni;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- __kernel_ulong_t shmseg;
- __kernel_ulong_t shmall;
- __kernel_ulong_t __unused1;
- __kernel_ulong_t __unused2;
+  __kernel_ulong_t shmseg;
+  __kernel_ulong_t shmall;
+  __kernel_ulong_t __unused1;
+  __kernel_ulong_t __unused2;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- __kernel_ulong_t __unused3;
- __kernel_ulong_t __unused4;
+  __kernel_ulong_t __unused3;
+  __kernel_ulong_t __unused4;
 };
 #endif
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */