py-distribute @0.6.19_0 cannot install more than one subport

[mndavidoff (Monte Davidoff)]

I first installed py32-distribute, then tried to install py27-distribute, and received the following error:

$ port installed 'name:^py.*-distribute$'
The following ports are currently installed:
  py32-distribute @0.6.19_0 (active)
$ sudo port -vs install py27-distribute
...
Error: Target org.macports.activate returned: Image error: /opt/local/share/doc/py-distribute/CHANGES.txt is being used by the active py32-distribute port.  Please deactivate this port first, or use 'port -f activate py27-distribute' to force the activation.
Warning: the following items did not execute (for py27-distribute): org.macports.activate
Log for py27-distribute is at: /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_python_py-distribute/py27-distribute/main.log
Error: Status 1 encountered during processing.
To report a bug, see <http://guide.macports.org/#project.tickets>

The attached patch to the Portfile, which installs documentation in the ${subport} directory instead of the ${name} directory, seems to fix the problem.

[jmroot (Joshua Root)]

Thanks. r82499