ZF-3866: Zend_Controller_Request_Http isFlashRequest fix

Description

On a mac the user_agent for a flash request isn't "Shockwave flash" It's "Adobe Flash Player "

The isFlashRequest function should be modified to include that. And some research should be done if other variants exists.

Also see the comment in: ZF-2471

Comments

Resolved in trunk in r12302.

Changing issues in preparation for the 1.7.0 release.