Plugin & definition don't need to be executable

These shell scriptlets are only meant to be included by other shell
scripts to set up some variables and a few helper shell functions.
Add a definition for 5.6.0alpha2.
Merge pull request #186 from bcremer/add-php-5.6.0alpha2-definition

Add a definition for 5.6.0alpha2.
Added a definition for php 5.6.0alpha3
Bump xdebug to 2.2.4 for php 5.6 alpha 3
Merge pull request #188 from GrahamCampbell/5.6.0alpha3

Added A Definition For PHP 5.6.0 Alpha 3
Updated definitions
Merge pull request #190 from GrahamCampbell/php

5.5.10, 5.5.26, 5.6snapshot
Vagrant provision file fails on installing BATS - #191

Fix: #191
Merge pull request #192 from jaguerra/master

Vagrant provision file fails on installing BATS - #191
Added php 5.4.27 and 5.5.11
Merge pull request #194 from GrahamCampbell/new

Added php 5.4.27 and 5.5.11
Added php 5.6.0beta1
Merge pull request #196 from GrahamCampbell/5.6.0beta1

Added php 5.6.0 Beta 1
Updates
Merge pull request #197 from GrahamCampbell/new

Added php 5.4.28, 5.5.12, 5.6.0beta2, xdebug 2.2.5
New versions
Merge pull request #198 from GrahamCampbell/new

New Versions
New php
Merge pull request #202 from GrahamCampbell/new

Added php 5.6 rc1