Getting enriched meta to stick in GLI with special chars and encodings in subfolders and filenames

[ak19]

Getting enriched meta to stick in GLI with special chars and encodings in subfolders and filenames. Affected were doc.xml and metadata.xml when Gathered subfolder names and filenames contained special characters (&, + and accented chars or unicode chars beyond ascii).

Now that I have added a new bugfix related to the issue and noticed there was no ticket that brought together all the commit revisions that comprised the overall fix for this topic, I am going to try to list all the commits here.

http://trac.greenstone.org/changeset/33724,

http://trac.greenstone.org/changeset/33726 to http://trac.greenstone.org/changeset/33730

http://trac.greenstone.org/changeset/33737 to http://trac.greenstone.org/changeset/33739

http://trac.greenstone.org/changeset/33744 to http://trac.greenstone.org/changeset/33751

http://trac.greenstone.org/changeset/33756 to http://trac.greenstone.org/changeset/33758

http://trac.greenstone.org/changeset/33777

And today's bugfix: http://trac.greenstone.org/changeset/34105