portindex: use 'string bytelength' instead of 'string length', so UTF-8 characters in the PortInfo don't break the code that reads the PortIndex
portindex: use 'string bytelength' instead of 'string length', so UTF-8 characters in the PortInfo don't break the code that reads the PortIndex

git-svn-id: 620571fa9b4bd0cbce9a0cf901e91ef896adbf27@47206 d073be05-634f-4543-b044-5fe20cf6d1d6

danchr/macports-base,macports/macports-base,neverpanic/macports-base,danchr/macports-base,macports/macports-base,neverpanic/macports-base