Replace "bitcoin" with "Zcash".

src/httpserver.cpp

@@ -267,7 +267,7 @@ static void http_request_cb(struct evhttp_request* req, void* arg)
 /** Event dispatcher thread */
 static void ThreadHTTP(struct event_base* base, struct evhttp* http)
 {
-    RenameThread("bitcoin-http");
+    RenameThread("zcash-http");
     LogPrint("http", "Entering http event loop\n");
     event_base_dispatch(base);
     // Event loop will be interrupted by InterruptHTTPServer()
@@ -316,7 +316,7 @@ static bool HTTPBindAddresses(struct evhttp* http)
 /** Simple wrapper to set thread name and run work queue */
 static void HTTPWorkQueueRun(WorkQueue<HTTPClosure>* queue)
 {
-    RenameThread("bitcoin-httpworker");
+    RenameThread("zcash-httpworker");
     queue->Run();
 }