* 0.8.7p1 doesn't contain *.info documentation; use manpage
instead
* Update meta.description to not contain the package name (redundant)
* 0.8.7p1 only builds with python dateutil==1.5, so that has to be added
as well
Runtime tested with the buildbot slave that is added in the next commit.
* Updated scons to version 1.0.0. Also added appropriate makeWrapper calls to
ensure that the python binary finds its library files.
* Updated Twisted from 2.5 to 8.1.
* Added an expression for buildbot.
svn path=/nixpkgs/trunk/; revision=12782
