Extended support for RGB cards (#819) (PR #837)

Video mode: "Color (RGB Card/Monitor)"
. RGB HGR rendering (no half-dot-shift, no vertical blend)
. RGB DHGR rendering
  - Color 140-mode is a real 140x192 mode with no color fringe (Video7 patent, shows that way on real hardware)
  - Mixed mode: correct transition for Color 140-mode <-> B&W (validated on a real IIc adapter.)
. Complete Féline support (eg. 2 distinct greys)
. Fixed Video7 SL7 inverse text
. Fixed DHIRES mixed mode detection
. NB. Prince of Persia will switch to B&W (560-mode) when going from HGR back to DHGR (same on real hardware).

Video mode: "Color (Composite Idealized)"
. Previously this was "Color (RGB Monitor)" (and before that, the AppleWin 1.25 "Color (Standard)")
. Now this mode does not support the extra RGB cards' video modes

source/Video.cpp

@@ -101,8 +101,9 @@ static LPDIRECTDRAW g_lpDD = NULL;
 	// NOTE: KEEP IN SYNC: VideoType_e g_aVideoChoices g_apVideoModeDesc
 	TCHAR g_aVideoChoices[] =
 		TEXT("Monochrome (Custom)\0")
-		TEXT("Color (RGB Monitor)\0")
-		TEXT("Color (NTSC Monitor)\0")
+		TEXT("Color (Composite Idealized)\0")		// newly added
+		TEXT("Color (RGB Card/Monitor)\0")	// was "Color (RGB Monitor)"
+		TEXT("Color (Composite Monitor)\0")	// was "Color (NTSC Monitor)"
 		TEXT("Color TV\0")
 		TEXT("B&W TV\0")
 		TEXT("Monochrome (Amber)\0")
@@ -114,14 +115,15 @@ static LPDIRECTDRAW g_lpDD = NULL;
 	// The window title will be set to this.
 	const char *g_apVideoModeDesc[ NUM_VIDEO_MODES ] =
 	{
-		  "Monochrome Monitor (Custom)"
-		, "Color (RGB Monitor)"
-		, "Color (NTSC/PAL Monitor)"
+		  "Monochrome (Custom)"
+		, "Color (Composite Idealized)"
+		, "Color (RGB Card/Monitor)"
+		, "Color (Composite Monitor)"
 		, "Color TV"
 		, "B&W TV"
-		, "Amber Monitor"
-		, "Green Monitor"
-		, "White Monitor"
+		, "Monochrome (Amber)"
+		, "Monochrome (Green)"
+		, "Monochrome (White)"
 	};
 
 // Prototypes (Private) _____________________________________________
@@ -615,6 +617,7 @@ void VideoReinitialize (bool bInitVideoScannerAddress /*= true*/)
 	NTSC_SetVideoStyle();
 	NTSC_SetVideoTextMode( g_uVideoMode &  VF_80COL ? 80 : 40 );
 	NTSC_SetVideoMode( g_uVideoMode );	// Pre-condition: g_nVideoClockHorz (derived from g_dwCyclesThisFrame)
+	VideoSwitchVideocardPalette(RGB_GetVideocard(), GetVideoType());
 }
 
 //===========================================================================