Various formatting and consistency fixes

Source/Core/VideoBackends/OGL/TextureCache.cpp

@@ -402,7 +402,7 @@ void TextureCache::DisableStage(unsigned int stage)
 
 void TextureCache::SetStage ()
 {
-	// -1 is the initial value as we don't know which testure should be bound
+	// -1 is the initial value as we don't know which texture should be bound
 	if (s_ActiveTexture != (u32)-1)
 		glActiveTexture(GL_TEXTURE0 + s_ActiveTexture);
 }