Log message:
Drop superfluous PKG_DESTDIR_SUPPORT, "user-destdir" is default these days.
Mark packages that don't or might probably not have staged installation.

Log message:
Import py26-hcluster-0.2.0 as wip/py-hcluster.

This library provides Python functions for hierarchical clustering.

        * generating hierarchical clusters from distance matrices
        * computing distance matrices from observation vectors
        * computing statistics on clusters
        * cutting linkages to generate flat clusters
        * and visualizing clusters with dendrograms.

The interface is very similar to MATLAB's Statistics Toolbox API to make code
easier to port from MATLAB to Python/Numpy. The core implementation of this
library is in C for efficiency.