Revert "don't render shadows... they dont even work according to othe…

…r comments on the matter"

There appears to be minimal fps hit with the optimized DrawChars function, but if this becomes an issue I can implement a faster one.

This reverts commit ce38224.

src/BitmapText.cpp

@@ -700,6 +700,21 @@ void BitmapText::DrawPrimitives()
 	// Draw if we're not fully transparent or the zbuffer is enabled
 	if( m_pTempState->diffuse[0].a != 0 )
 	{
+		// render the shadow
+		if( m_fShadowLengthX != 0  ||  m_fShadowLengthY != 0 )
+		{
+			DISPLAY->PushMatrix();
+			DISPLAY->TranslateWorld( m_fShadowLengthX, m_fShadowLengthY, 0 );
+
+			RageColor c = m_ShadowColor;
+			c.a *= m_pTempState->diffuse[0].a;
+			for( unsigned i=0; i<m_aVertices.size(); i++ )
+				m_aVertices[i].c = c;
+			DrawChars( false );
+
+			DISPLAY->PopMatrix();
+		}
+
 		// render the stroke
 		RageColor stroke_color= GetCurrStrokeColor();
 		if( stroke_color.a > 0 )