Added new commandline option: --noframe

When enabled, this passed the SDL_NOFRAME flag when setting video.  This is useful for people who want to use fceux dual head.

src/drivers/sdl/config.cpp

@@ -155,6 +155,7 @@ InitConfig()
     config->addOption("yscale", "SDL.YScale", 1.0);
     config->addOption("xstretch", "SDL.XStretch", 0);
     config->addOption("ystretch", "SDL.YStretch", 0);
+    config->addOption("noframe", "SDL.NoFrame", 0);
 
     // OpenGL options
     config->addOption("opengl", "SDL.OpenGL", 0);

src/drivers/sdl/sdl-video.cpp

@@ -57,6 +57,7 @@ static double s_exs, s_eys;
 static int s_eefx;
 static int s_clipSides;
 static int s_fullscreen;
+static int noframe;
 
 #define NWIDTH	(256 - (s_clipSides ? 16 : 0))
 #define NOFFSET	(s_clipSides ? 8 : 0)
@@ -136,6 +137,7 @@ InitVideo(FCEUGI *gi)
     g_config->getOption("SDL.XResolution", &xres);
     g_config->getOption("SDL.YResolution", &yres);
     g_config->getOption("SDL.ClipSides", &s_clipSides);
+    g_config->getOption("SDL.NoFrame", &noframe);
 
     // check the starting, ending, and total scan lines
     FCEUI_GetCurrentVidSystem(&s_srendline, &s_erendline);
@@ -172,6 +174,10 @@ InitVideo(FCEUGI *gi)
     if(s_fullscreen) {
         flags |= SDL_FULLSCREEN;
     }
+    
+    if(noframe) {
+        flags |= SDL_NOFRAME;
+    }
 
     // gives the SDL exclusive palette control... ensures the requested colors
     flags |= SDL_HWPALETTE;
@@ -280,7 +286,7 @@ InitVideo(FCEUGI *gi)
             return -1;
         }
 #endif
-
+        
         s_screen = SDL_SetVideoMode((int)(NWIDTH * s_exs),
                                   (int)(s_tlines * s_eys),
                                   desbpp, flags);

src/drivers/sdl/sdl.cpp

@@ -63,6 +63,7 @@ char *DriverUsage=
 --doublebuf x	Enable SDL double-buffering if x is nonzero.\n\
 --fullscreen x, -f x	Select full screen mode if x is nonzero.\n\
 --clipsides x	Clip left- and rightmost 8 columns of pixels if x is nonzero.\n\
+--noframe x     Hides title bar and window decorations.\n\
 --slstart x	Set the first drawn emulated scanline.  Valid values for x are\n\
 	        0 through 239.\n\
 --slend x	Set the last drawn emulated scanline.  Valid values for x are\n\