Upgraded build pack utils to #6548fff.
Added first cut at a base extension class.
Updated extension helper classs to implement the basic flow of an
extension.  Extension authors just need to subclass and implement the
protected versions of the methods, like `_compile`,  and `_configure`.
Also improved the test coverage dramatically.
Updated binaries with codizy extensions for lucid.
Load config in separate method instead of constructor. Save config paths
so that they can be used if needed, like when saving changes.
First cut at a Codizy extension.  Unit and integration tests passing.
Modified install to load ioncube as a zend extension.  Also, to make
sure it is loaded as the first zend_extension.
Updated precise & trusty binaries for Codizy.
Updated precise & trusty binaries for Codizy.
Added codizy related extensions to 5.4.32 & 5.5.17.
Merge branch 'codizy' of github.com:dmikusa-pivotal/cf-php-build-pack into codizy
Fixed names on index files.
Adding zlib extension to the ones required by Codizy.