* ghostscript: incomplete fix for CVE-2018-16509 (CVE-2018-16863)
Bug Fix(es):
* Previously, the flushpage operator has been removed as part of a major
clean-up of a non-standard operator. However, flushpage has been found to
be used in a few specific use cases. With this update, it has been re-
added to support those use cases.
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