improve filecache support for smb
improve filecache support for smb

owncloud/core,sharidas/core,Ardinis/server,michaelletzgus/nextcloud-server,andreas-p/nextcloud-server,andreas-p/nextcloud-server,jbicha/server,michaelletzgus/nextcloud-server,pixelipo/server,jbicha/server,cernbox/core,nextcloud/server,pmattern/server,andreas-p/nextcloud-server,owncloud/core,lrytz/core,owncloud/core,xx621998xx/server,whitekiba/server,bluelml/core,bluelml/core,whitekiba/server,xx621998xx/server,xx621998xx/server,endsguy/server,sharidas/core,endsguy/server,xx621998xx/server,phil-davis/core,owncloud/core,pmattern/server,IljaN/core,pmattern/server,jbicha/server,pollopolea/core,pollopolea/core,pollopolea/core,Ardinis/server,michaelletzgus/nextcloud-server,whitekiba/server,xx621998xx/server,whitekiba/server,Ardinis/server,pollopolea/core,sharidas/core,lrytz/core,endsguy/server,jbicha/server,pollopolea/core,bluelml/core,cernbox/core,pixelipo/server,IljaN/core,pixelipo/server,nextcloud/server,sharidas/core,andreas-p/nextcloud-server,pixelipo/server,jbicha/server,IljaN/core,Ardinis/server,bluelml/core,owncloud/core,pmattern/server,bluelml/core,sharidas/core,nextcloud/server,nextcloud/server,lrytz/core,michaelletzgus/nextcloud-server,lrytz/core,IljaN/core,cernbox/core,pixelipo/server,cernbox/core,endsguy/server,cernbox/core,endsguy/server,andreas-p/nextcloud-server,lrytz/core,Ardinis/server,pmattern/server,whitekiba/server,IljaN/core