• Update to 1.6.3
• add and update URLs of MASTER_SITES
• add LICENSE related lines
• update author's email address
• update WWW site URL to shorter version

PR: ports/165232
Submitted by: Shin-ya Murakami <murashin@gfd-dennou.org> (maintainer)
Sponsored by: RideCharge Inc. / TaxiMagic