lib/curl/Request: add methods StartIndirect(), StopIndirect()

src/lib/curl/Request.hxx

@@ -93,6 +93,11 @@ public:
 	 */
 	void Start();
 
+	/**
+	 * A thread-safe version of Start().
+	 */
+	void StartIndirect();
+
 	/**
 	 * Unregister this request via CurlGlobal::Remove().
 	 *
@@ -100,6 +105,11 @@ public:
 	 */
 	void Stop() noexcept;
 
+	/**
+	 * A thread-safe version of Stop().
+	 */
+	void StopIndirect();
+
 	CURL *Get() noexcept {
 		return easy.Get();
 	}