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/oom.h b/libc/kernel/uapi/linux/oom.h
index d37f36c..3db05ca 100644
--- a/libc/kernel/uapi/linux/oom.h
+++ b/libc/kernel/uapi/linux/oom.h
@@ -18,11 +18,11 @@
  ****************************************************************************/
 #ifndef _UAPI__INCLUDE_LINUX_OOM_H
 #define _UAPI__INCLUDE_LINUX_OOM_H
-#define OOM_SCORE_ADJ_MIN (-1000)
+#define OOM_SCORE_ADJ_MIN (- 1000)
 #define OOM_SCORE_ADJ_MAX 1000
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
-#define OOM_DISABLE (-17)
-#define OOM_ADJUST_MIN (-16)
+#define OOM_DISABLE (- 17)
+#define OOM_ADJUST_MIN (- 16)
 #define OOM_ADJUST_MAX 15
 #endif
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */