Move some general usage methods to Utilities, to avoid dupplicate code :

Move some general usage methods to Utilities, to avoid dupplicate code :
static inline bool FileExists(std::string strFilename)
static std::string ExtractPackageName(const std::string  &name,
					  std::string& path)
static std::string ExtractScriptName(const std::string  &name
static std::string ExpandLibName(const std::string &name, bool verbose)
static std::string MakeLibnameFromPath(std::string path, std::string pkgname)
static inline  bool IsAtRoot(std::string cwd)
static inline void SplitAroundFirstDot( const std::string& in,
                                            std::string& left,
                                            std::string& right)

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