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/dlm_plock.h b/libc/kernel/uapi/linux/dlm_plock.h
index 1946ef9..425be36 100644
--- a/libc/kernel/uapi/linux/dlm_plock.h
+++ b/libc/kernel/uapi/linux/dlm_plock.h
@@ -26,29 +26,29 @@
 #define DLM_PLOCK_VERSION_PATCH 0
 enum {
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- DLM_PLOCK_OP_LOCK = 1,
- DLM_PLOCK_OP_UNLOCK,
- DLM_PLOCK_OP_GET,
+  DLM_PLOCK_OP_LOCK = 1,
+  DLM_PLOCK_OP_UNLOCK,
+  DLM_PLOCK_OP_GET,
 };
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define DLM_PLOCK_FL_CLOSE 1
 struct dlm_plock_info {
- __u32 version[3];
- __u8 optype;
+  __u32 version[3];
+  __u8 optype;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- __u8 ex;
- __u8 wait;
- __u8 flags;
- __u32 pid;
+  __u8 ex;
+  __u8 wait;
+  __u8 flags;
+  __u32 pid;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- __s32 nodeid;
- __s32 rv;
- __u32 fsid;
- __u64 number;
+  __s32 nodeid;
+  __s32 rv;
+  __u32 fsid;
+  __u64 number;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- __u64 start;
- __u64 end;
- __u64 owner;
+  __u64 start;
+  __u64 end;
+  __u64 owner;
 };
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif