zkSNARK: Add constraint that the total value in a JoinSplit is a 64-bit integer.
zkSNARK: Add constraint that the total value in a JoinSplit is a 64-bit integer.

aniemerg/zcash,loxal/zcash,loxal/zcash,aniemerg/zcash,aniemerg/zcash,CTRoundTable/Encrypted.Cash,CTRoundTable/Encrypted.Cash,bitcoinsSG/zcash,bitcoinsSG/zcash,aniemerg/zcash,CTRoundTable/Encrypted.Cash,bitcoinsSG/zcash,loxal/zcash,loxal/zcash,bitcoinsSG/zcash,CTRoundTable/Encrypted.Cash,CTRoundTable/Encrypted.Cash,loxal/zcash,aniemerg/zcash,CTRoundTable/Encrypted.Cash,bitcoinsSG/zcash,bitcoinsSG/zcash,aniemerg/zcash,loxal/zcash