 A Single-Blind, Randomized, Placebo Controlled, Ascending Single and Repeat Dose Study with Once Daily Dosing to Evaluate the Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of GSK376501 and to Evaluate Food Effects and the Relative Bioavailability of a Tablet Formulation Compared to the Powder for Reconstitution Formulation in Healthy Overweight and Obese Subjects DIX109177 