python2 : ports missing a 27 variant

[BjarneDMat]

In order to be able to remove the python26 port, py-{name} ports that are missing a py27-{name} need to be updated -or- abandoned/removed.

py-clnum                                  26                      ryandesign@macports.org
py-psyco                                  26                      jmr@macports.org
py-rpncalc                                26                      ryandesign@macports.org

Please indicate here, what action you want to be taken, and I'll make a consolidated squashed and minimised pull.

See the "[portgroups] Python" thread in macports-user for further information/diskussion.