A PROFIT WITH HONOR Walk into any Gap clothing store this holiday season and expect to see red T-shirts, red hats and red bracelets. Of course decorating with red is nothing unusual this time of year, but the merchandise is meant to remind customers of something not often associated with the holidays: the global AIDS epidemic. Gap is one of a number of companies this year who are tapping into consumers' growing desire to do good deeds with their purchasing dollars. Other retailers selling products to benefit humanitarian causes include Bath & Body Works, a division of Limited Brands Inc.,...