record the autoconf value for INSTALL, to avoid hardcoding /usr/bin/install
record the autoconf value for INSTALL, to avoid hardcoding /usr/bin/install

git-svn-id: 620571fa9b4bd0cbce9a0cf901e91ef896adbf27@33500 d073be05-634f-4543-b044-5fe20cf6d1d6

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