Bring back SetThreadPriority

src/util.cpp

@@ -789,6 +789,19 @@ bool SetupNetworking()
     return true;
 }
 
+void SetThreadPriority(int nPriority)
+{
+#ifdef WIN32
+    SetThreadPriority(GetCurrentThread(), nPriority);
+#else // WIN32
+#ifdef PRIO_THREAD
+    setpriority(PRIO_THREAD, 0, nPriority);
+#else // PRIO_THREAD
+    setpriority(PRIO_PROCESS, 0, nPriority);
+#endif // PRIO_THREAD
+#endif // WIN32
+}
+
 int GetNumCores()
 {
 #if BOOST_VERSION >= 105600