Improving state machine diagram generation when there are transitions from the boundaries of a superstate to a substate, vice-versa, or the boundary of a superstate to itself. Dummy notes had to be added since graphviz couldn't handle it. There remain some graphviz bugs, but with this fix 99% of state diagrams should look OK.


git-svn-id: http://umple.googlecode.com/svn/trunk@3832 6ebf9d09-8eb1-0036-9d08-68c07d1b990a