valgrind etc. added to sandbox
Add libxrender and libxtst to sandbox. Swing in Java 7 needs them.
added support for ruby
install some basic gems
Add JAVA_HOME for maven.
Improve maven_cache_test debuggability.
Fixed maven cache tests (a package's domain changed).
Merge remote-tracking branch 'tmcee/master'
Cleaned up Ruby build.
Make parallelism to 6 by default.
Only install rspec and bundler by default.
Install tmc-check.
Fix tmc-check build (now requires network for rubygems).
Mention Ubuntu dnsmasq conflict in readme.
updated readme
Updated kernel to 3.11.6.
Updated busybox to 1.21.1
Updated ruby to 2.0.0-p247
Updated maven to 3.1.1
Updated squid to 3.3.9