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-repoze.tm2-1.0a5 as wip/py-repoze.tm2.

repoze.tm2 is a middleware which uses the ZODB transaction manager
to wrap a call to its pipeline children inside a transaction.  This
is a fork of the repoze.tm package which depends only on the transaction
package rather than the entirety of ZODB (for users who don't rely on
ZODB).