* Use of ptrdiff_t whenever necessary (IA-64 port) ;

* Use of ptrdiff_t whenever necessary (IA-64 port) ;
* Changed behaviour of preparsing code, faster startup ;
* Fixed DecodePSM(), cannot test ;
* Cleaned up ParsePES(), fixed a bug which could reject very small but
  valid PES packets ;
* Fixed cosmetic bugs in vpar_synchro frame_rate display.