Remove private variables from AbstractControllerTestCase.
set 0 as header value (issue #4583)
PR #4588
Merge branch 'issue_4583' of git://github.com/rodsouto/zf2 into rodsouto-issue_4583
PR #4588 merged to master
Merge branch 'rodsouto-issue_4583'
PR #4553
Merge branch 'patch-3' of git://github.com/spiffyjr/zf2 into spiffyjr-patch-3
PR #4553 merge to master
Merge branch 'spiffyjr-patch-3'