ZF-6413: Zend_Tool command line (zf.php) should be able to handle different include_path strategies

Description

Zend_Tool command line (zf.php) should be able to handle different include_path strategies.

Should be able to read an include_path from an environment variable, as well as be able to run out of the box (from download) without being in the include_path.

Comments

Fixed in r15129