[macports-ports] branch patch-4 created (now c209398)

[Mark Moll]

Mark Moll (mamoll) pushed a change to branch patch-4
in repository macports-ports.

      at c209398  py-graph-tool: reset revision number after version bump, delete deprecated checksums, add clang60 variant

This branch includes the following new commits:

     new 5cc1c89  Update py-graph-tool to version 2.27
     new c209398  py-graph-tool: reset revision number after version bump, delete deprecated checksums, add clang60 variant

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