Update cobertura-maven-plugin to 2.6 from 2.5.1.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/pool/trunk@1622041 13f79535-47bb-0310-9956-ffa450edef68
Update maven-checkstyle-plugin to 2.12.1 from 2.9.1 which fixes [MCHECKSTYLE-172]: Checkstyle Plugin 2.8+ generates an additional aggregate report.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/pool/trunk@1622042 13f79535-47bb-0310-9956-ffa450edef68
Remove unnecessary parentheses.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/pool/trunk@1622043 13f79535-47bb-0310-9956-ffa450edef68
Update findbugs-maven-plugin to 3.0.0 from 2.4.0.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/pool/trunk@1622045 13f79535-47bb-0310-9956-ffa450edef68
[POOL-273] Update cglib to 3.1 from 3.0. "mvn test" OK.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/pool/trunk@1622059 13f79535-47bb-0310-9956-ffa450edef68
[POOL-274] Update asm-util to 5.0.3 from 4.0.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/pool/trunk@1622064 13f79535-47bb-0310-9956-ffa450edef68