Include files in zend/bad/zip/

Summary: This was included in zend/good, but the importer didn't know of this.
Unfortunately it didn't fix a test
Closes https://github.com/facebook/hhvm/pull/3684

Reviewed By: @sgolemon

Differential Revision: D1541445
Fix undefined variable in Imagick::valid

Summary: Fixes #3682
Closes https://github.com/facebook/hhvm/pull/3683

Reviewed By: @sgolemon

Differential Revision: D1541444