[bugfix] added missing support for Node.getPreviousSibling() to in-memory DOM. Port of rev 7562.
[bugfix] added missing support for Node.getPreviousSibling() to in-memory DOM. Port of rev 7562.

svn path=/trunk/eXist/; revision=7567

patczar/exist,wshager/exist,MjAbuz/exist,wolfgangmm/exist,opax/exist,kohsah/exist,wolfgangmm/exist,RemiKoutcherawy/exist,wolfgangmm/exist,joewiz/exist,wshager/exist,patczar/exist,patczar/exist,patczar/exist,opax/exist,lcahlander/exist,jessealama/exist,hungerburg/exist,jessealama/exist,eXist-db/exist,zwobit/exist,dizzzz/exist,hungerburg/exist,ljo/exist,jessealama/exist,olvidalo/exist,kohsah/exist,shabanovd/exist,jessealama/exist,adamretter/exist,shabanovd/exist,patczar/exist,shabanovd/exist,ljo/exist,joewiz/exist,jensopetersen/exist,dizzzz/exist,kohsah/exist,hungerburg/exist,kohsah/exist,opax/exist,lcahlander/exist,wolfgangmm/exist,RemiKoutcherawy/exist,ambs/exist,eXist-db/exist,wolfgangmm/exist,shabanovd/exist,windauer/exist,joewiz/exist,ljo/exist,windauer/exist,wshager/exist,dizzzz/exist,zwobit/exist,adamretter/exist,adamretter/exist,hungerburg/exist,wshager/exist,windauer/exist,jessealama/exist,windauer/exist,dizzzz/exist,shabanovd/exist,ambs/exist,eXist-db/exist,olvidalo/exist,dizzzz/exist,lcahlander/exist,ambs/exist,hungerburg/exist,zwobit/exist,lcahlander/exist,zwobit/exist,ljo/exist,patczar/exist,MjAbuz/exist,RemiKoutcherawy/exist,jensopetersen/exist,dizzzz/exist,eXist-db/exist,olvidalo/exist,windauer/exist,jensopetersen/exist,MjAbuz/exist,wshager/exist,olvidalo/exist,lcahlander/exist,lcahlander/exist,ljo/exist,ljo/exist,olvidalo/exist,MjAbuz/exist,joewiz/exist,eXist-db/exist,MjAbuz/exist,joewiz/exist,ambs/exist,opax/exist,ambs/exist,adamretter/exist,jensopetersen/exist,jensopetersen/exist,opax/exist,jensopetersen/exist,shabanovd/exist,zwobit/exist,wolfgangmm/exist,joewiz/exist,zwobit/exist,RemiKoutcherawy/exist,adamretter/exist,ambs/exist,kohsah/exist,RemiKoutcherawy/exist,windauer/exist,MjAbuz/exist,wshager/exist,eXist-db/exist,RemiKoutcherawy/exist,adamretter/exist,jessealama/exist,kohsah/exist