logic: apply some shared memory fixes

* corrections in estimating size of intermediate indexer commands
* avoided clearing and refilling the indexed files list every time files get added
* changed memory growth policy of InterprocessIndexingStatusManager to double allocated memory when it gets full
* added potential to grow memory when adding crashed file paths

src/lib_cxx/data/indexer/IndexerCommandCxx.cpp

@@ -26,17 +26,17 @@ size_t IndexerCommandCxx::getByteSize() const
 
 	for (auto i : m_systemHeaderSearchPaths)
 	{
-		size += i.str().size();
+		size += sizeof(std::string) + i.str().size();
 	}
 
 	for (auto i : m_frameworkSearchPaths)
 	{
-		size += i.str().size();
+		size += sizeof(std::string) + i.str().size();
 	}
 
 	for (auto i : m_compilerFlags)
 	{
-		size += i.size();
+		size += sizeof(std::string) + i.size();
 	}
 
 	return size;

src/lib_cxx/data/indexer/IndexerCommandCxxCdb.cpp

@@ -64,7 +64,7 @@ IndexerCommandType IndexerCommandCxxCdb::getIndexerCommandType() const
 
 size_t IndexerCommandCxxCdb::getByteSize() const
 {
-	return IndexerCommandCxx::getByteSize() + sizeof(*this) + m_workingDirectory.str().size();
+	return IndexerCommandCxx::getByteSize() + sizeof(std::string) + m_workingDirectory.str().size();
 }
 
 FilePath IndexerCommandCxxCdb::getWorkingDirectory() const

src/lib_cxx/data/indexer/IndexerCommandCxxManual.cpp

@@ -30,7 +30,7 @@ IndexerCommandType IndexerCommandCxxManual::getIndexerCommandType() const
 
 size_t IndexerCommandCxxManual::getByteSize() const
 {
-	return IndexerCommandCxx::getByteSize() + sizeof(*this);
+	return IndexerCommandCxx::getByteSize() + sizeof(std::string) + m_languageStandard.size();
 }
 
 std::string IndexerCommandCxxManual::getLanguageStandard() const