The Gin Baby
IRT Theatre, Kid Brooklyn and Mermaid Sand Productions, Off Off Broadway By Jason Rost BOTTOM LINE: This glimpse into a troubled mind is loud, dark and spiteful. The title of Sarah Shaefer's new play may sound like a boozy dark comedy with the qualities of Edward Albee, but The Gin Baby is not about blunt wittiness -- instead it's a spiral into a darkness that is not fun to watch, nor is it meant to be. Brou…