Move toArray() to Stdlib\AbstractOptions
Move toArray() to Stdlib\AbstractOptions

Also added a specific exception for the __strictMode__ key.

MadCat34/zend-stdlib,sravanchandj/zend-stdlib,akrabat/zend-stdlib,ezimuel/zend-stdlib,adamlundrigan/zend-stdlib,php-refactoring/zend-array-utility,weierophinney/zend-stdlib