No idea. Never heard the term. Two possibilities come to mind - NOT sure that either is even close:
1) it's really spelled "whine-hiking" - you know the type - "it's too hot", "it's too cold", "are we there yet", "there's too many bugs", "i have a pebble in my shoe", "you mean i have to take a dump where and wipe with what???!!!", "are we there yet", "are there any animals in these woods", "are we there yet", etc. we've all run into these - perhaps, more often than we'd care to.
a) in case anyone is wondering, this did NOT describe my family, and...
b) any resemblence to any person, whether living, dead, one-foot-in-the-grave, over-the-hill, yet to be born, real, or imagined is unintentional and purely coincidental and no libel, slander, name calling, bad mouthing, malfeasance, or any other clever sounding word that i also don't the meaning of is intended by the above description.]
2) maybe it's someone who has to have all of the latest "gadgets and gizmos aplenty (to quote Ariel the Little Mermaid). You know the type - battery operated fan in their pith helmet plus 4 or 5 different electronic communication devices (including a mini-wrist LCD TV to keep up with the latest Soaps or Sports, or whatever they keep up with on those things). Hey they might even have a full-blown winecellar in their backpack so the proper wine can be served depending upon whether it's a chicken or a beef dish being "boiled in the bag". You know the type, designer labelled backpacks ("Hey, I didn't know Gucci made backpacks?!!", "Have you seen the latest Armani summit pack? It's sooo Giorgio!!")
I don't know. Just some thoughts (or maybe, more accurately - the lack of thoughts).
Can't wait to see the REAL clever ones in our midst take this "ball" and run with it. Go ahead, I dare you, brighten up my day.