This compares the performance of RICHIO line readers against other
implementations, and can be used for profiling and optimisation.
Current benchmarks provided:
* richio FILE_LINE_READER
* Raw std::ifstream (no LINE_READER wrapper), using getline (so no line
length limiting)
* LINE_READER wrapper around std::istream, with a std::ifstream
implementation
* Existing richio wxInputStream wrappers (with File and FFile
implemntations)