Update PHPUnit to version 4.1.1

Closes #1174
Upgrade PHP 5.6 to 5.6.0 beta 4
codeception up to 2.0.0
php5*-phalcon: 1.3.2
Upgrade php*-mongo to 1.5.6
Upgrade php*-swoole to 1.7.2
Upgrade PHPUnit to 4.1.2
Use File.exist? instead of File.exists?

File.exists? is deprecated in Ruby 2.1+.
New virtphp version
Update PHPUnit to 4.1.3
Upgrade php*-apcu to 4.0.5
Upgrade php*-apcu to 4.0.6
Upgrade php*-timezonedb to 2014.5
update php-version to 0.11.0
Upgrade PHP 5.6 to 5.6.0 rc 1
Upgrade PHP 5.6 to 5.6.0 rc 1
Upgrade php*-mongo to 1.5.4
Fixup installation instructions
Upgrade php*-riak to 1.2.0
Update php*-solr to 2.0.0