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/socket.h b/libc/kernel/uapi/linux/socket.h
index 23aae72..292dd16 100644
--- a/libc/kernel/uapi/linux/socket.h
+++ b/libc/kernel/uapi/linux/socket.h
@@ -19,12 +19,12 @@
 #ifndef _UAPI_LINUX_SOCKET_H
 #define _UAPI_LINUX_SOCKET_H
 #define _K_SS_MAXSIZE 128
-#define _K_SS_ALIGNSIZE (__alignof__ (struct sockaddr *))
+#define _K_SS_ALIGNSIZE (__alignof__(struct sockaddr *))
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 typedef unsigned short __kernel_sa_family_t;
 struct __kernel_sockaddr_storage {
- __kernel_sa_family_t ss_family;
- char __data[_K_SS_MAXSIZE - sizeof(unsigned short)];
+  __kernel_sa_family_t ss_family;
+  char __data[_K_SS_MAXSIZE - sizeof(unsigned short)];
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
-} __attribute__ ((aligned(_K_SS_ALIGNSIZE)));
+} __attribute__((aligned(_K_SS_ALIGNSIZE)));
 #endif