Bump llhttp to 2.1.1

third-party/llhttp/README.md

 # llhttp
-[![Build Status](https://secure.travis-ci.org/nodejs/llhttp.svg)](http://travis-ci.org/nodejs/llhttp)
 
 Port of [http_parser][0] to [llparse][1].
 

third-party/llhttp/include/llhttp.h

@@ -2,8 +2,12 @@
 #define INCLUDE_LLHTTP_H_
 
 #define LLHTTP_VERSION_MAJOR 2
-#define LLHTTP_VERSION_MINOR 0
-#define LLHTTP_VERSION_PATCH 4
+#define LLHTTP_VERSION_MINOR 1
+#define LLHTTP_VERSION_PATCH 1
+
+#ifndef LLHTTP_STRICT_MODE
+# define LLHTTP_STRICT_MODE 0
+#endif
 
 #ifndef INCLUDE_LLHTTP_ITSELF_H_
 #define INCLUDE_LLHTTP_ITSELF_H_
@@ -140,7 +144,8 @@ enum llhttp_method {
   HTTP_MKCALENDAR = 30,
   HTTP_LINK = 31,
   HTTP_UNLINK = 32,
-  HTTP_SOURCE = 33
+  HTTP_SOURCE = 33,
+  HTTP_PRI = 34
 };
 typedef enum llhttp_method llhttp_method_t;
 
@@ -206,6 +211,7 @@ typedef enum llhttp_method llhttp_method_t;
   XX(31, LINK, LINK) \
   XX(32, UNLINK, UNLINK) \
   XX(33, SOURCE, SOURCE) \
+  XX(34, PRI, PRI) \