Added handling of IPTC People, Location and Headline fields.

[Bengt Thuree <bengt thuree com>]

Hi Guys, 

I created a new small bug #356387 [1] with patch [2] for the following
problem.


F-Spot do not look for the following tags in IPTC for the moment.

Contact                  = Record.Application | 118, - People
ContentLocationName      = Record.Application | 27 - Location
Headline                 = Record.Application | 105,

I created a small patch (that also includes the fix for bug #356330 [3]) to import these
extra tags/fields.
One problem though, is that if these tags ALSO exists as XMP data, they will be
duplicated.

The patch will map these IPTC fields to
photoshop:Headline
mediapro:People
Iptc4xmpCore:Location

There is no check for if these tags already exists as XMP tags.

It imports the tags in Dotans test photos nicely, apart from the headline since F-Spot do not import any headline for the moment.
My iViewMedia Pro test photos gets duplicated XMP tags (People, Location, etc) due to they already existed.

Comments? Testers?

/Bengt

[1] : http://bugzilla.gnome.org/show_bug.cgi?id=356387
[2] : http://bugzilla.gnome.org/attachment.cgi?id=72935&action=view
[3] : http://bugzilla.gnome.org/show_bug.cgi?id=356330