MINYANVILLE ORIGINAL It was 25 years ago today that Gordon Gekko arrived on our screens and for one brief shining moment on Monday the ’80s made a comeback as that era’s quintessential corporate raider Carl Icahn helped Hewlett-Packard (HPQ) gain to top the Dow (^DJI).   Fellow blue chip McDonald’s (MCD) rose 1.05% amid strong sales of its 790 calorie Cheddar Bacon Onion sandwich. (And to think childhood obesity rates are apparently falling.) One billion travelers will traverse the Earth in 2012 an all time high although someone evidently forgot to inform Expedia (EXPE) which imploded 3.62%.   Today in economics October wholesale inventories are out at 10:00 a.m. ...