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/linux/nfsd/cld.h b/libc/kernel/uapi/linux/nfsd/cld.h
index 16b3629..3593634 100644
--- a/libc/kernel/uapi/linux/nfsd/cld.h
+++ b/libc/kernel/uapi/linux/nfsd/cld.h
@@ -22,28 +22,28 @@
 #define NFS4_OPAQUE_LIMIT 1024
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 enum cld_command {
- Cld_Create,
- Cld_Remove,
- Cld_Check,
+  Cld_Create,
+  Cld_Remove,
+  Cld_Check,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- Cld_GraceDone,
+  Cld_GraceDone,
 };
 struct cld_name {
- uint16_t cn_len;
+  uint16_t cn_len;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- unsigned char cn_id[NFS4_OPAQUE_LIMIT];
+  unsigned char cn_id[NFS4_OPAQUE_LIMIT];
 } __attribute__((packed));
 struct cld_msg {
- uint8_t cm_vers;
+  uint8_t cm_vers;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- uint8_t cm_cmd;
- int16_t cm_status;
- uint32_t cm_xid;
- union {
+  uint8_t cm_cmd;
+  int16_t cm_status;
+  uint32_t cm_xid;
+  union {
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- int64_t cm_gracetime;
- struct cld_name cm_name;
- } __attribute__((packed)) cm_u;
+    int64_t cm_gracetime;
+    struct cld_name cm_name;
+  } __attribute__((packed)) cm_u;
 } __attribute__((packed));
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif