Zend Framework 2.4 basic optimization

[jorelcb]

Based on:
http://blog.hock.in/2014/05/14/maximising-performance-in-zf2-phpuk/
http://www.masterzendframework.com/performance-2/classmap-autoloader
http://hounddog.github.io/blog/performance-in-zend-framework-2/

[kenjis]

Thank you for your PR.

Your code did not work (Parse error and Fatal error), so I fixed: f013d2e
Is it okay?

[jorelcb]

Perfect!. Thank You for that fix.

[jorelcb]

getAutoloaderConfig function fixed, please check!

[kenjis]

Thank you. But I already fixed and merged your PR.

I updated my benchmarks:
https://github.com/kenjis/php-framework-benchmark/tree/optimize#hello-world-benchmark

But I don't see the effect of this optimization. In fact the rps decreased a little by chance.
When I benchmarked for the first time, the number increased a little.