Dear me, I should have committed this long ago...

1) Added natives to create and manipulate global and private forward
2) Added natives to call forwards and functions
3) Added an IChanageableForward::RemoveFunction overload for convenience or something
4) Added test suite plugins for functions and forwards
5) Some random touch-ups to some include files

--HG--
extra : convert_revision : svn%3A39bc706e-5318-0410-9160-8a85361fbb7c/trunk%40627

core/systems/ForwardSys.cpp

@@ -601,6 +601,18 @@ bool CForward::AddFunction(IPluginContext *pContext, funcid_t index)
 	return AddFunction(pFunc);
 }
 
+bool CForward::RemoveFunction(IPluginContext *pContext, funcid_t index)
+{
+	IPluginFunction *pFunc = pContext->GetFunctionById(index);
+
+	if (!pFunc)
+	{
+		return false;
+	}
+
+	return RemoveFunction(pFunc);
+}
+
 bool CForward::RemoveFunction(IPluginFunction *func)
 {
 	bool found = false;