Clarify Test Action behaviour
Clarify Test Action behaviour

git-svn-id: https://svn.apache.org/repos/asf/jakarta/jmeter/branches/rel-2-1@408535 13f79535-47bb-0310-9956-ffa450edef68

Former-commit-id: 45fdd498aa79ba662cf87b92d1dfabf3a9ebf01f
etnetera/jmeter,ham1/jmeter,benbenw/jmeter,ham1/jmeter,benbenw/jmeter,apache/jmeter,etnetera/jmeter,etnetera/jmeter,apache/jmeter,ham1/jmeter,etnetera/jmeter,ham1/jmeter,benbenw/jmeter,apache/jmeter,apache/jmeter,etnetera/jmeter,ham1/jmeter,apache/jmeter,benbenw/jmeter