Fixed the "too many open files" error: when importing a module into the XQuery context, the opened source reader was not properly closed.
Fixed the "too many open files" error: when importing a module into the XQuery context, the opened source reader was not properly closed.

svn path=/trunk/eXist-1.0/; revision=2086

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