Merged revisions 5787 via svnmerge from
https://matplotlib.svn.sourceforge.net/svnroot/matplotlib/branches/v0_91_maint
........ r5787 | jdh2358 | 2008-07-18 09:46:32 -0500 (Fri, 18 Jul 2008) | 1 line added Tuukka's YAArrow fix for horiz and vertical lines ........
Authored by: jdh2358 2008-07-18
Parent: [r5787]
Child: [r5789]