NewsLady Gaga, Eminem, Jay-Z, Justin Timberlake and Barbra Streisand are just a handful of the 100-plus stars scheduled to take part in a re-recording of “We Are the World” to benefit Haiti Lady Gaga, Eminem, Jay-Z, Justin Timberlake and Barbra Streisand are just a handful of the 100-plus stars scheduled to take…