Mention breaking changes Update 4.1 to 5.0
Mention breaking changes
Update 4.1 to 5.0

git-svn-id: https://svn.apache.org/repos/asf/jmeter/trunk@1839115 13f79535-47bb-0310-9956-ffa450edef68

Former-commit-id: f8fb20aa9a711aa351a976098890bfedb97b235d
ham1/jmeter,apache/jmeter,etnetera/jmeter,apache/jmeter,apache/jmeter,ham1/jmeter,ham1/jmeter,etnetera/jmeter,apache/jmeter,etnetera/jmeter,ham1/jmeter,ham1/jmeter,benbenw/jmeter,apache/jmeter,benbenw/jmeter,benbenw/jmeter,etnetera/jmeter,benbenw/jmeter,etnetera/jmeter