Bugfix in ContourSet._process_linestyles
scatter docs fixed
Updated the importation of numpy.ma; numerix.npyma is obsolete.
Added outerjoin, lefjoin and rightjoin support to rec_join
fix cursor mapping in backend_qt4
minor tweaks to filesave.svg
Fixing merge error. (Thanks Manuel Metz)
Fixing set_alpha bug when there is no facecolors (thanks Michael Fitzgerald)
removed an unnecessary call to FigureCanvasAgg.draw in the qt*agg backends
updates suggested by Eric (see Changelog entries)
