Gold prices eased on Friday and were on track for their first weekly drop in 10, weighed down a stronger dollar and as market participants squared positions ahead of a key U.S. inflation report due later in the day. Spot gold was down 0.2% at $4,118.68 per ounce, as of 0315 GMT. Bullion has fallen 3% so far this week, heading for its biggest weekly percentage drop since mid-May. U.S. gold fu