Adding port fixes
Updated Mesos version
Increased JVM overhead slightly (2.5%).
Added missing snappy dependency.
Updated README.
Merge pull request #13 from brndnmtthws/increase-overhead

Fixes
Handle edge case for tracker cleanup timer.
Randomize port selection.
Merge pull request #12 from rcarmo/master

Bumped Mesos version and merged port fix
Merge pull request #14 from brndnmtthws/master

Fixed port overlap, tracker GC
Be more careful with tracker handling.

  - When killing trackers, make sure the one we're killing is actually
    the same as the one we've been asked to kill.
  - Make sure we start the periodic timer when the startup timer fires.
Merge pull request #15 from brndnmtthws/master

Careful with tracker handling.
Add .gitignore.
Refactoring the code to make it easier to reason about
Cleaned up imports.
Added meter for flaky tracker killing.
Increased JVM overhead.
Set -Xms in addition to -Xmx.

Conflicts:
	src/main/java/org/apache/hadoop/mapred/ResourcePolicy.java
Fix for the tracker with no slots problem.
Metrics version bump, pom cleanup.