SFTP: add support for recursive nlist and rawlist
SFTP: add support for recursive nlist and rawlist

danog/phpseclib,phpseclib/phpseclib,thaigialai1987/phpseclib,creatuity/phpseclib,paragonie-scott/phpseclib,metaclassing/phpseclib,splitice/phpseclib,thaigialai1987/phpseclib,melya/phpseclib,melya/phpseclib,kenichiii/phpseclib,kenichiii/phpseclib,splitice/phpseclib,paragonie-scott/phpseclib,creatuity/phpseclib,danog/phpseclib,terrafrost/phpseclib,metaclassing/phpseclib