Move checkstyle to a separate Travis job
Move checkstyle to a separate Travis job

closes #175

git-svn-id: https://svn.apache.org/repos/asf/jmeter/trunk@1737586 13f79535-47bb-0310-9956-ffa450edef68

Former-commit-id: d63f4a6e0a7eae76c0ada5a92ad971f8dec31e76
apache/jmeter,benbenw/jmeter,ham1/jmeter,benbenw/jmeter,apache/jmeter,ham1/jmeter,etnetera/jmeter,benbenw/jmeter,apache/jmeter,benbenw/jmeter,apache/jmeter,etnetera/jmeter,ham1/jmeter,etnetera/jmeter,etnetera/jmeter,ham1/jmeter,etnetera/jmeter,apache/jmeter,ham1/jmeter