Rewrote some of the socket code to allow m_ssl to be a service.

This allows modules (xmlrpc) to create and accept SSL connections.
Also fixed unloading m_mysql at certain times and made the threading
engine always work correctly on Windows.

src/threadengine.cpp

@@ -2,16 +2,39 @@
 
 ThreadEngine threadEngine;
 
+/** Check for finished threads
+ */
+void ThreadEngine::Process()
+{
+	for (unsigned i = this->threads.size(); i > 0; --i)
+	{
+		Thread *t = this->threads[i - 1];
+
+		if (t->GetExitState())
+		{
+			t->Join();
+			delete t;
+		}
+	}
+}
+
 /** Threads constructor
  */
 Thread::Thread() : Exit(false)
 {
+	threadEngine.threads.push_back(this);
 }
 
 /** Threads destructor
  */
 Thread::~Thread()
 {
+	std::vector<Thread *>::iterator it = std::find(threadEngine.threads.begin(), threadEngine.threads.end(), this);
+
+	if (it != threadEngine.threads.end())
+	{
+		threadEngine.threads.erase(it);
+	}
 }
 
 /** Sets the exit state as true informing the thread we want it to shut down