Preinstall Scala 2.11.4 and sbt 0.13.5
Preinstall Scala 2.10.2

This is a workaround for sbt/sbt#1439 and lack of Nexus proxy hosted by
Travis infrastructure.
Preinstall Scala 2.9.2 for cross-build purpose

Different 2.9.x versions of Scala are binary incompatible.
Happily, Scala patch versions from 2.10.0 on have become binary
compatible, so we won't have to worry about this point in the future.

See https://github.com/sbt/sbt/issues/1439#issuecomment-52964928
Update changelog
Merge pull request #362 from travis-ci/gc-scala-updates

Scala updates and workarounds
Updated php 5.4 and 5.5
Merge pull request #363 from GrahamCampbell/php

Updated php 5.4 and 5.5
Cut off changes for August 2014 updates
Update Go to 1.3.1 for sandard worker role
Remove mention of Travis workers

These cookbooks do not run on workers, but on a provisioning
machine that typically has a lot more memory.