Allow openjdk8 or oraclejdk8 to satisfy Mesos dependency on Java, by just depending on virtual 'java-runtime-headless'
Merge pull request #24 from stevenschlansker/depends-jdk8

Allow openjdk8 or oraclejdk8 to satisfy Mesos dependency on Java
Fix cp failure when src dir not present

When cp is used with an expanded eggs[@] array, it will exit with an
error code if one of the directories does not exist, which will cause
the bash script to fail. Instead of relying on this approach to find the
eggs, just use a default python_dist path which is overridden if eggs
are found in the old location.
Merge branch 'master' into el7

Conflicts:
	build_mesos