ZF-5083: Incorrect file specified in a Zend_Gdata require_once statement

Description

Zend/Gdata/Books/Extension/BooksCategory.php has a require_once that specifies Zend/Gdata/Atom/Extension/Category.php; this should actually be Zend/Gdata/App/Extension/Category.php.

Comments

Fixed in trunk with r12907, and merged to 1.7 release branch with r12908