IPTC terms should continue to be used from the IPTC Extension

[GoogleCodeExporter]

IPTC terms used in AC are from the IPTC Extension, but most have a definition 
in the IPTC Core namespace also. We should continue to use those in the 
extension.

As an example, see <a 
href="http://terms.gbif.org/wiki/Audubon_Core_Term_List_(DRAFT_of_1.0_normative)
#xmpRights:Owner">xmpRights:Owner</a>

Pros:

<a 
href="http://www.iptc.org/std/photometadata/specification/IPTC-PhotoMetadata-201
007_1.pdf">The IPTC document</a> carries this advice on page 11:

(legacy) appended to a property name<br>>
This suffix is used if the IPTC Extension provides a better solution to 
annotate the information about an image than the IPTC Core does. In this case, 
the IPTC recommends to phase out the use of the (legacy)-marked property and to 
move towards using the IPTC Extension. See the notes on this matter in the 
particular specification table.

Original issue reported on code.google.com by morris.bob on 21 Nov 2012 at 3:33

[GoogleCodeExporter]

Based on the advice mentioned in "Pros" I have kept everything in the IPTC 
Extension.

Original comment by morris.bob on 25 Nov 2012 at 11:53

• Changed state: Fixed
• Added labels: Type-Defect, Priority-High, Component-Terms

[GoogleCodeExporter]

Original comment by morris.bob on 8 Jun 2013 at 5:02

• Added labels: Milestone-Release1.0