SMS 1.7 rev5 con soporte Control Remoto

- fixed "...the .srt subtitle file which is selected by entering "Select subtitles"
menu can't be loaded with .avi if they are stored in mass:..." bug. Thanks to
"magusneo" for the remark;
- added remote control support and removed gamepad support for slot 1:
* for PS2 models without built-in IR sensor AND WITH rom1:RMMAN module an external
IR sensor should be plugged into slot 1;
* for PS2 models without built-in IR sensor AND WITHOUT rom1:RMMAN module SMS looks
for mc0:/SMS/RMMAN.IRX module which is just a copy of rom1:RMMAN module from PS2
models where this module is present. An external IR sensor should be plugged into
slot 1;
* for PS2 models with built-in IR sensor an external IR sensor has no effect;
* for PS2 models without built-in IR sensor AND without rom1:RMMAN module AND
without mc0:/SMS/RMMAN.IRX module remote control support is disabled;
* Button mappings in SMS file browser:
- "Reset" - turns console off;
- "Enter" - equivalent to "cross" gamepad button;
- "Play" - equivalent to "cross" gamepad button;
- "A-B" - display about;
- "Menu" - display SMS menu;
- "Top menu" - activate device browser menu (ignored in the device browser);
- "Subtitle" - equivalent to "circle" gamepad button (ignored in the device browser);
- "Program" - equivalent to "square" gamepad button (ignored in the device browser);
- "Return" - equivalent to "triangle" gamepad button (ignored in the device browser);
* Button mappings in SMS player:
- "Pause" - pause;
- "Menu" - player menu;
- "Play" - resume;
- "Reset" - equivalent to "triangle" gamepad button;
- "Return" - equivalent to "triangle" gamepad button;
- "Stop" - equivalent to "triangle" gamepad button;
- "Scan >>" - equivalent to "right" gamepad button;
- "Scan <<" - equivalent to "left" gamepad button;
- "Display" - equivalent to "square" gamepad button;
- "Time" - equivalent to "cross" gamepad button;
- "Audio" - equivalent to "circle" gamepad button;

Note that in order to get remote control (with "external" IR sensor) working while
preserving gamepad and memory card functionalities unaffected a modified SIO2MAN
module is created (based on Marcus R. Brown code from SVN and my own disassembly
works) and integrated into SMS (source code of it can also be found in SVN).
THERE'S NO WARRANTY THAT OTHER DEVICES LIKE MULTITAP ETC. WILL WORK WITH IT.
Thanks to "Mr.Worm~~" and "Rathunter" for testing;

- added 'FMP4' fourcc recognition. Thanks to "ntt2005" for the research/note;
- added support for "simple" M3U list. Only relative paths are supported;
- updated some IOP drivers from ps2sdk;