base: pass up information on why fetching failed, don't print that fetching failed, because that's already being done further up the stack
base: pass up information on why fetching failed, don't print that fetching failed, because that's already being done further up the stack

git-svn-id: 620571fa9b4bd0cbce9a0cf901e91ef896adbf27@118716 d073be05-634f-4543-b044-5fe20cf6d1d6

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