EXIF GPS data

[B-Scan]

Attached patch adds GPS longitude and latitude to image meta data.
Changed: wp_read_image_metadata function (file: wp-admin/includes/image.php).

It complies with exif standard:
​http://www.exif.org/Exif2-2.PDF (page 46)

Commented on wp-hackers list:
​http://comox.textdrive.com/pipermail/wp-hackers/2009-March/025093.html

Patch version of previous attachment

is_float(50) == false

In the incredibly unlikely case* that the number coming out of wp_exif_gpsconvert() is an integer, it will return 999.

*Or a GPS unit with sufficiently low resolution to only return degrees and not minutes or seconds.