Fix nested CollectionInputFilter not valid if count not specified
Fix nested CollectionInputFilter not valid if count not specified

Conflicts:
	tests/ZendTest/InputFilter/CollectionInputFilterTest.php

zf2timo/zend-inputfilter,akrabat/zend-inputfilter,zendframework/zend-inputfilter,MadCat34/zend-inputfilter,weierophinney/zend-inputfilter,Blinden/zend-inputfilter,Maks3w/zend-inputfilter,stefanotorresi/zend-inputfilter,akomm/zend-inputfilter