Creates a package definition from the framework version being built,
and uses composer to install it into an installer project, as well
as the required modules for testing.
Pull requests are always on a branch, and this branch
typically is not present on the installer.
This changes means we need to be careful when merging into 3.1
and master, but that's a necessary evil.
The entire framework repo (with the exception of system-generated files) has been amended to respect the 120c line-length limit. This is in preparation for the enforcement of this rule with PHP_CodeSniffer.
The Travis config will now run tests on the following instances
* 5.3 + SQLite
* 5.3 + MySQL
* 5.3 + PostgreSQL
* 5.4 + MySQL
In other words, with the exception of Windows tech (MSSQL + Win server) this is a wide-coverage build config.
