UPDATE 4-HCA cuts IPO 19 pct, now to raise up to $3.7 bln

* IPO to raise up to $3.7 bln vs $4.6 bln as first filed * HCA IPO expected to price at $27 to $30 per share * HCA to sell 87.7 mln shares; shareholders, 36.3 mln * Liabilities exceeded assets by almost $12 bln...