Add 5.4.15 & 5.4.16
Add 5.3.25 & 5.3.26
Bump 5.4 base class from 5.4.10 to latest 5.4.16
Bump 5.3 base class from 5.3.20 to latest 5.3.26
Remove references to php_build
Add FPM service classes for 5.3.25 & 5.3.26
Add FPM service classes for 5.4.15 & 5.4.16
Add latest versions of PHP