Flickr Field sub-module is not in the "Flickr" module package but in "Others"

Add to the flickrfield.info file:
package = Flickr

While at it, also make the name:
name = Flickr Field
instead of "Flickrfield", to be in line with the other sub-modules in the package. Take also the term "CCK" out of the description (refers to a D6 module, now in core).