[MacPorts] #32054: Update ARB to 5.3

[MacPorts]

#32054: Update ARB to 5.3
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 Reporter:  matt.cottrell@…       |       Owner:  macports-tickets@…                   
     Type:  update                |      Status:  new                                  
 Priority:  Normal                |   Milestone:                                       
Component:  ports                 |     Version:                                       
 Keywords:  maintainer            |        Port:  arb                                  
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Comment(by matt.cottrell@…):

 Portfile diff now removes "revision" and deals with the clang preprocessor
 problem.

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Ticket URL: <https://trac.macports.org/ticket/32054#comment:3>
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