- Added translucent blending modes to FMultipatchTexture (not tested yet!)

- Also changed all true color texture creation functions to use proper alpha
  values instead of inverted ones.
- Changed FRemapTable so that all palette entries must contain proper alpha
  values. 
- Fixed: The F1 screen check in m_menu.cpp was missing a NULL pointer check.
- Changed: The boss brain's explosions play weapons/rocklx which is an 
  unlimited sound. This can become extremely loud. Replaced with a new
  sound which is just an alias to weapons/rocklx but has a limit of 4.


SVN r932 (trunk)

src/textures/jpegtexture.cpp

@@ -381,7 +381,7 @@ int FJPEGTexture::CopyTrueColorPixels(FBitmap *bmp, int x, int y, int rotate, FC
 			break;
 
 		case JCS_GRAYSCALE:
-			for(int i=0;i<256;i++) pe[i]=PalEntry(0,i,i,i);	// default to a gray map
+			for(int i=0;i<256;i++) pe[i]=PalEntry(255,i,i,i);	// default to a gray map
 			bmp->CopyPixelData(x, y, buff, cinfo.output_width, cinfo.output_height, 
 				1, cinfo.output_width, rotate, pe, inf);
 			break;