Moving KFIleMetadata into KDE SC (documentation and ExtractionResult)

[David Edmundson]

Add COPYING file
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ExtractorPluginManager::fetchExtractors seems odd to me.
If it can't find any plugins it searches for all plugins that start
the same prefix.

I assume it's designed so I can have a plugin with the mimetype audio/
that will still match the file mimetype audio/mp3
But this means that if I add a special new plugin with the mimetype
audio/mp3 the original plugin will stop running? Given you're trying
to build a list of all valid plugins, is that meant to happen?

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ExtractionResult:

Having setInputUrl / setInputMimetype public in a way which can be set
by the plugins seems wrong; personally I'd put the two in the
constructor.


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We should document the list of names of properties that can be extracted.
Some things are in lowerCamelCase i.e "wordCount" "author" except for
the eviv plugin which is in the form:
Exif.Image.Make

and the odf extractor which is in the form

"dc:title"

to me it seems fairly random.