File _patchinfo of Package patchinfo.6245

<patchinfo incident="6245">
  <issue id="1020127" tracker="bnc">Leap 42.2 lacks a virtual PDF printer</issue>
This optional update introduces cups-pdf to 42.2.

cups-pdf is a PDF writer backend or CUPS.
It provides a virtual CUPS-PDF printer which produces PDF file so that
application programs which have no built-in support to "Save as PDF"
could print to CUPS-PDF to get a PDF file.
  <summary>Initial update for cups-pdf</summary>
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