update to 1.12.3

I have
* fixed the composer.json
* fixed the import script (it's a Makefile now, and uses composer to download ZF)
* updated to ZF 1.12.13 (every module is its own commit for easier reversing)
* included a patch for `Zend_Registry` to make it work with HHVM

The diff is enormous because the Copyright date changed in every file...