Generation of NuSMV specifications of basic state machines

git-svn-id: http://umple.googlecode.com/svn/trunk@4719 6ebf9d09-8eb1-0036-9d08-68c07d1b990a
git-svn-id: http://umple.googlecode.com/svn/trunk@4720 6ebf9d09-8eb1-0036-9d08-68c07d1b990a