opencv: separate build directory


git-svn-id: http://svn.macports.org/repository/macports/trunk@113097 d073be05-634f-4543-b044-5fe20cf6d1d6
xorg-xtrans: Bump to 1.3.2


git-svn-id: http://svn.macports.org/repository/macports/trunk@113098 d073be05-634f-4543-b044-5fe20cf6d1d6
xorg-xextproto: Bump to 7.3 rc1


git-svn-id: http://svn.macports.org/repository/macports/trunk@113099 d073be05-634f-4543-b044-5fe20cf6d1d6
Merge branch 'master' of git://git.macports.org/macports/trunk