get_the_date() to accept optional $post argument

[bigdawggi]

Currently the get_the_date() function only utilizes the global $post. Allowing this function to accept an optional $post object as an argument would be beneficial for getting the formatted date of any post.

Patch for get_the_date() to accept optional $post arg.

We typically call get_post() and let it figure out whether to use the global.

No more enhancements for 3.0. Moving to 3.1.

Thanks Ryan. I agree, I was just trying to trim the extra function calls; but after review it may not be worth the investment in time to set a precedent of allowing an optional $post arg in template tags, though I'll let you guys decide ;)

Also cleaned up the code/docs a bit.

(When) Will this be added to core?