Update strip_filename skips (#2401)
Update strip_filename skips (#2401)

Portableapps.com has switched to portableapps.duckduckgo.com as their freeware host and skipping strip_filename is no longer required.
Remove downloads subdomain from sourceforge.net to allow mirror redirect urls (e.g. https://sourceforge.net/projects/phppgadmin/files/latest/download).
nikolasd/scoop,berwyn/scoop,lukesampson/scoop,coonce/scoop,rasa/scoop,kodybrown/scoop