Pullup ticket #6306 - requested by bouyer
misc/xygrib: build fix

Revisions pulled up:
- misc/xygrib/distinfo                                          1.5
- misc/xygrib/patches/patch-src_SkewT.h                        1.1

---
  Module Name: pkgsrc
  Committed By: bouyer
  Date: Fri Aug 21 11:31:28 UTC 2020

  Modified Files:
  pkgsrc/misc/xygrib: distinfo
  Added Files:
  pkgsrc/misc/xygrib/patches: patch-src_SkewT.h

  Log Message:
  include <QPainterPath> to fix build with current version of Qt.

(bsiegert)