logic: indexer commands

* replaced parser arguments by project specific IndexerCommands that know everything the indexer needs to know to do its job
* added different language and project specific indexers that know how to handle a certain kind of indexer command
* refactored FileManager and FileRegister to have less overhead
* removed no-rtti restriction for clang files in lib cxx
* uncommented deprecated interprocess code.

fortune cookie message = Happiness will bring you good luck.

src/lib/data/TaskMergeStorages.cpp

@@ -0,0 +1,58 @@
+#include "data/TaskMergeStorages.h"
+
+#include <chrono>
+#include <thread>
+
+#include "data/StorageProvider.h"
+
+TaskMergeStorages::TaskMergeStorages(
+	std::shared_ptr<StorageProvider> storageProvider
+)
+	: m_storageProvider(storageProvider)
+{
+}
+
+void TaskMergeStorages::doEnter(std::shared_ptr<Blackboard> blackboard)
+{
+}
+
+Task::TaskState TaskMergeStorages::doUpdate(std::shared_ptr<Blackboard> blackboard)
+{
+	if (m_storageProvider->getStorageCount() > 2) // largest storage won't be touched here
+	{
+		std::shared_ptr<IntermediateStorage> target = m_storageProvider->consumeSecondLargestStorage();
+		std::shared_ptr<IntermediateStorage> source = m_storageProvider->consumeSecondLargestStorage();
+		if (target && source)
+		{
+			target->inject(source.get());
+			m_storageProvider->insert(target);
+			return STATE_SUCCESS;
+		}
+		else
+		{
+			if (target)
+			{
+				m_storageProvider->insert(target);
+			}
+			if (source)
+			{
+				m_storageProvider->insert(source);
+			}
+		}
+	}
+	else
+	{
+		const int SLEEP_TIME_MS = 25;
+		std::this_thread::sleep_for(std::chrono::milliseconds(SLEEP_TIME_MS));
+	}
+
+	return STATE_FAILURE;
+}
+
+void TaskMergeStorages::doExit(std::shared_ptr<Blackboard> blackboard)
+{
+}
+
+void TaskMergeStorages::doReset(std::shared_ptr<Blackboard> blackboard)
+{
+}