a495 updates from nafraf in http://chdk.setepontos.com/index.php?topic=650.msg104469#msg104469
- fix remote shoot command in continuous mode
- define REMOTE_SYNC_STATUS_LED
- code rewritten using code_gen
fix osd for -/+ bracketing, from erikhallberg in http://chdk.setepontos.com/index.php?topic=650.msg104548#msg104548
remove obsolete item from a495 notes.txt