Use symlink instead of copyfile in download_dump.py
Use symlink instead of copyfile in download_dump.py

Bug: T183668
Change-Id: I6491aed72e292260e0c464d3e7eb87e739402878

magul/pywikibot-core,magul/pywikibot-core,wikimedia/pywikibot-core,PersianWikipedia/pywikibot-core,wikimedia/pywikibot-core