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-x86/asm/statfs.h b/libc/kernel/uapi/asm-x86/asm/statfs.h
index efc8d06..3174035 100644
--- a/libc/kernel/uapi/asm-x86/asm/statfs.h
+++ b/libc/kernel/uapi/asm-x86/asm/statfs.h
@@ -18,7 +18,7 @@
  ****************************************************************************/
 #ifndef _ASM_X86_STATFS_H
 #define _ASM_X86_STATFS_H
-#define ARCH_PACK_COMPAT_STATFS64 __attribute__((packed,aligned(4)))
+#define ARCH_PACK_COMPAT_STATFS64 __attribute__((packed, aligned(4)))
 #include <asm-generic/statfs.h>
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif