posix: upgrade libevent from 1.4.7 to 1.4.13

third_party/libevent/evhttp.h

 /*
  * Copyright (c) 2000-2004 Niels Provos <provos@citi.umich.edu>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 249 matching lines @@
 struct evhttp_connection *evhttp_connection_new(
         const char *address, unsigned short port);
 
 /** Frees an http connection */
 void evhttp_connection_free(struct evhttp_connection *evcon);
 
 /** sets the ip address from which http connections are made */
 void evhttp_connection_set_local_address(struct evhttp_connection *evcon,
     const char *address);
 
+/** sets the local port from which http connections are made */
+void evhttp_connection_set_local_port(struct evhttp_connection *evcon,
+    unsigned short port);
+
 /** Sets the timeout for events related to this connection */
 void evhttp_connection_set_timeout(struct evhttp_connection *evcon,
     int timeout_in_secs);
 
 /** Sets the retry limit for this connection - -1 repeats indefnitely */
 void evhttp_connection_set_retries(struct evhttp_connection *evcon,
     int retry_max);
 
 /** Set a callback for connection close. */
 void evhttp_connection_set_closecb(struct evhttp_connection *evcon,
@@ skipping 44 matching lines @@
   The returned string must be freed by the caller.
 
   @param uri an encoded URI
   @return a newly allocated unencoded URI
  */
 char *evhttp_decode_uri(const char *uri);
 
 
 /**
  * Helper function to parse out arguments in a query.
- * The arguments are separated by key and value.
- * URI should already be decoded.
+ *
+ * Parsing a uri like
+ *
+ *    http://foo.com/?q=test&s=some+thing
+ *
+ * will result in two entries in the key value queue.
+
+ * The first entry is: key="q", value="test"
+ * The second entry is: key="s", value="some thing"
+ *
+ * @param uri the request URI
+ * @param headers the head of the evkeyval queue
  */
-void evhttp_parse_query(const char *uri, struct evkeyvalq *);
+void evhttp_parse_query(const char *uri, struct evkeyvalq *headers);
 
 
 /**
  * Escape HTML character entities in a string.
  *
  * Replaces <, >, ", ' and & with &lt;, &gt;, &quot;,
  * &#039; and &amp; correspondingly.
  *
  * The returned string needs to be freed by the caller.
  *
  * @param html an unescaped HTML string
  * @return an escaped HTML string
  */
 char *evhttp_htmlescape(const char *html);
 
 #ifdef __cplusplus
 }
 #endif
 
 #endif /* _EVHTTP_H_ */