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/if_pppol2tp.h b/libc/kernel/uapi/linux/if_pppol2tp.h
index 661c56d..36b8ced 100644
--- a/libc/kernel/uapi/linux/if_pppol2tp.h
+++ b/libc/kernel/uapi/linux/if_pppol2tp.h
@@ -21,54 +21,54 @@
 #include <linux/types.h>
 struct pppol2tp_addr {
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- __kernel_pid_t pid;
- int fd;
- struct sockaddr_in addr;
- __u16 s_tunnel, s_session;
+  __kernel_pid_t pid;
+  int fd;
+  struct sockaddr_in addr;
+  __u16 s_tunnel, s_session;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- __u16 d_tunnel, d_session;
+  __u16 d_tunnel, d_session;
 };
 struct pppol2tpin6_addr {
- __kernel_pid_t pid;
+  __kernel_pid_t pid;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- int fd;
- __u16 s_tunnel, s_session;
- __u16 d_tunnel, d_session;
- struct sockaddr_in6 addr;
+  int fd;
+  __u16 s_tunnel, s_session;
+  __u16 d_tunnel, d_session;
+  struct sockaddr_in6 addr;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
 struct pppol2tpv3_addr {
- __kernel_pid_t pid;
- int fd;
+  __kernel_pid_t pid;
+  int fd;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- struct sockaddr_in addr;
- __u32 s_tunnel, s_session;
- __u32 d_tunnel, d_session;
+  struct sockaddr_in addr;
+  __u32 s_tunnel, s_session;
+  __u32 d_tunnel, d_session;
 };
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct pppol2tpv3in6_addr {
- __kernel_pid_t pid;
- int fd;
- __u32 s_tunnel, s_session;
+  __kernel_pid_t pid;
+  int fd;
+  __u32 s_tunnel, s_session;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- __u32 d_tunnel, d_session;
- struct sockaddr_in6 addr;
+  __u32 d_tunnel, d_session;
+  struct sockaddr_in6 addr;
 };
 enum {
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- PPPOL2TP_SO_DEBUG = 1,
- PPPOL2TP_SO_RECVSEQ = 2,
- PPPOL2TP_SO_SENDSEQ = 3,
- PPPOL2TP_SO_LNSMODE = 4,
+  PPPOL2TP_SO_DEBUG = 1,
+  PPPOL2TP_SO_RECVSEQ = 2,
+  PPPOL2TP_SO_SENDSEQ = 3,
+  PPPOL2TP_SO_LNSMODE = 4,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- PPPOL2TP_SO_REORDERTO = 5,
+  PPPOL2TP_SO_REORDERTO = 5,
 };
 enum {
- PPPOL2TP_MSG_DEBUG = (1 << 0),
+  PPPOL2TP_MSG_DEBUG = (1 << 0),
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- PPPOL2TP_MSG_CONTROL = (1 << 1),
- PPPOL2TP_MSG_SEQ = (1 << 2),
- PPPOL2TP_MSG_DATA = (1 << 3),
+  PPPOL2TP_MSG_CONTROL = (1 << 1),
+  PPPOL2TP_MSG_SEQ = (1 << 2),
+  PPPOL2TP_MSG_DATA = (1 << 3),
 };
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif