Mering https://trac.macports.org/changeset/23847 back into trunk: making sure the svn export is clean by rm'ing the destination if it exist prior to the export itself.
Mering https://trac.macports.org/changeset/23847 back into trunk: making sure the svn export is clean by rm'ing the destination if it exist prior to the export itself.

git-svn-id: 620571fa9b4bd0cbce9a0cf901e91ef896adbf27@23851 d073be05-634f-4543-b044-5fe20cf6d1d6

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