scripted-diff: Replace CCriticalSection with RecursiveMutex

-BEGIN VERIFY SCRIPT-
 # Delete outdated alias for RecursiveMutex
 sed -i -e '/CCriticalSection/d'                 ./src/sync.h
 # Replace use of outdated alias with RecursiveMutex
 sed -i -e 's/CCriticalSection/RecursiveMutex/g' $(git grep -l CCriticalSection)
-END VERIFY SCRIPT-

src/init.cpp

@@ -172,7 +172,7 @@ void Interrupt(NodeContext& node)
 void Shutdown(NodeContext& node)
 {
     LogPrintf("%s: In progress...\n", __func__);
-    static CCriticalSection cs_Shutdown;
+    static RecursiveMutex cs_Shutdown;
     TRY_LOCK(cs_Shutdown, lockShutdown);
     if (!lockShutdown)
         return;