Eliminate annoying "Building foo with target (nothing)" message when target is unset.  Now just says "Building foo" if no target.
Eliminate annoying "Building foo with target (nothing)" message when
target is unset.  Now just says "Building foo" if no target.

git-svn-id: 620571fa9b4bd0cbce9a0cf901e91ef896adbf27@4954 d073be05-634f-4543-b044-5fe20cf6d1d6

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