int GetLock(std::string File,bool Errors = true);
bool FileExists(std::string File);
bool RealFileExists(std::string File);
-bool DirectoryExists(std::string const &Path) APT_CONST;
+bool DirectoryExists(std::string const &Path);
bool CreateDirectory(std::string const &Parent, std::string const &Path);
time_t GetModificationTime(std::string const &Path);
bool Rename(std::string From, std::string To);