[MacPorts] #53499: grc 1.10 - update from 1.9

[MacPorts]

#53499: grc 1.10 - update from 1.9
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 Reporter:  1-61803  |      Owner:
     Type:  update   |     Status:  new
 Priority:  Normal   |  Milestone:
Component:  ports    |    Version:
 Keywords:           |       Port:  grc
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 I corrected the spacing on most of the file. Otherwise I added the
 modeline, changed the version and checksums.

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Ticket URL: <https://trac.macports.org/ticket/53499>
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