message: log: call it caller_filename instead of filename
diff: @@ -47,8 +47,8 @@ class LogDetailed
  {
  public:
  LogDetailed(const char *filename, int filenumber) : _s(),
  - _filename(filename),
  - _filenumber(filenumber)
  + _caller_filename(filename),
  + _caller_filenumber(filenumber)
  {}
  template <typename T>
  @@ -94,7 +94,7 @@ public:
  }
  std::cout << _s.str();
  - std::cout << " (" << _filename << ":" << _filenumber << ")";
  + std::cout << " (" << _caller_filename << ":" << _caller_filenumber << ")";
  switch (_log_level) {
  case LogLevel::Info:
  @@ -122,8 +122,8 @@ protected:
  private:
  std::stringstream _s;
  - const char *_filename;
  - int _filenumber;
  + const char *_caller_filename;
  + int _caller_filenumber;
  };
  class LogDebugDetailed : public LogDetailed
  