DonateStrategy now use FailoverStrategy internally and possible to use any other IStrategy.

src/workers/Workers.cpp

@@ -83,10 +83,14 @@ void Workers::setEnabled(bool enabled)
 }
 
 
-void Workers::setJob(const Job &job)
+void Workers::setJob(const Job &job, bool donate)
 {
     uv_rwlock_wrlock(&m_rwlock);
     m_job = job;
+
+    if (donate) {
+        m_job.setPoolId(-1);
+    }
     uv_rwlock_wrunlock(&m_rwlock);
 
     m_active = true;