Modify links to use fancy URL

yeah, good feature request. it's totally possible to do, the only downside is that the first time it'll require an api request (the result of which is cacheable). i'll look at rolling a patch.

here's a quick one.

note for andrewlevine: take a look at what i did in flickr_people_get_info(). i'd like to start using that style of error checking/parameter extraction. it seems silly to have so many functions wrapping api calls if they don't do any of the error checking or pull out the relevant data item from the array, it's just as much code to call flickr_request in your own function. so my vote is to either have functions call flickr_request if they want detailed error handling and use the functions to simply it for most cases.

I agree that wrapper methods should return the data in the easiest-to-use possible form without discarding any data.

This would be my preferred error handling strategy:
* flickr_request calls flickr_set_error if request fails
* flickr_set_error prints error if user is admin and logs error no matter what
* flickr_wrapper returns NULL on error
* caller of flickr_wrapper prints whatever error messages necessary

here's a re-roll in the new style.

i committed this.