Add #@+ block for properties used by internal implementation.
Add #@+ block for properties used by internal implementation.

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