v3.8.11-bf

Algo update for Yenten 3.1.0

• Yenten (-a yespowerr16 or -a yenten)
• Old Yenten (-a yespower05r16)

for macOS (reduced version) (2019-04-28)

• Many algorithms can not be used, but YesPoWer can.
• macOS High Sierra or above, and Homebrew required
  $ brew install curl jansson openssl gmp