Update ElasticSearch to 1.3.4
Link all binaries created by ElasticSearch debian package
Create symbolic links with a ruby_block
Use File.symlink instead

`#link` is not defined here
Fix elasticsearch symlinking
PHP updates
Merge pull request #394 from GrahamCampbell/php

PHP Updates
Use special PPA only for Precise

For Trusty, there is a package from
http://packages.ubuntu.com/trusty/libzmq3

Fixes https://github.com/travis-ci/travis-ci/issues/2558
Undo enable-dynamic-scripting for elasticsearch

According to https://github.com/travis-ci/travis-ci/issues/2884,
dynamic scripting is on by default with ES 1.3.4
Update nvm to v0.17.3
Merge pull request #395 from ljharb/update_to_nvm_0_17_3

Update nvm to v0.17.3