curl.c: fix HTTP User-Agent string to conform to RFC 2616 (https://trac.macports.org/ticket/40319)
curl.c: fix HTTP User-Agent string to conform to RFC 2616 (https://trac.macports.org/ticket/40319)

git-svn-id: 620571fa9b4bd0cbce9a0cf901e91ef896adbf27@110487 d073be05-634f-4543-b044-5fe20cf6d1d6

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