base: doc/Makefile.in: chmod $prefix/man after installation
base: doc/Makefile.in: chmod $prefix/man after installation

When installing with umask != 0022 mtree doesn't get the permissions of the
installed link right. Adjust them where possible after installation.

git-svn-id: 620571fa9b4bd0cbce9a0cf901e91ef896adbf27@120076 d073be05-634f-4543-b044-5fe20cf6d1d6

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