Motivation: openjdk6 builds no longer work because openjdk6 is not available on travis trusty environments and maven version seems to have been upgraded past 3.3.0 (which was built on jdk7)
Fix:
use apt to fetch openjdk 6
use script to fetch specific versions of maven for different idk environments
Motivation: openjdk6 builds no longer work because openjdk6 is not available on travis trusty environments and maven version seems to have been upgraded past 3.3.0 (which was built on jdk7)
Fix: