SQLCipher: Define ARCHS to $ARCHS_STANDARD for all sdks
SQLCipher: Define ARCHS to $ARCHS_STANDARD for all sdks

This prevents Xcode 10 beta from outputting errors when it meets the i386 architecture.

groue/GRDB.swift,groue/GRDB.swift,groue/GRDB.swift,groue/GRDB.swift