[MacPorts] #28276: arb: Upgrade to 5.2

[MacPorts]

#28276: arb: Upgrade to 5.2
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 Reporter:  matt.cottrell@…       |       Owner:  macports-tickets@…                   
     Type:  update                |      Status:  new                                  
 Priority:  Normal                |   Milestone:                                       
Component:  ports                 |     Version:  1.9.2                                
 Keywords:  libpng                |        Port:  arb                                  
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Comment(by matt.cottrell@…):

 Replying to [comment:11 ryandesign@…]:
 >MacPorts uses `sysctl hw.cpu64bit_capable` to determine this; if it
 prints "1" the CPU is 64-bit capable; if it shows "0", then it's not. If
 it's "1", your message could advise the user to change build_arch; if it's
 "0", you could tell the user to buy a new computer. :)

 Sorry, what portfile keyword returns "1" or "0" based on the 64-bit
 capability of the hardware?  I searched the portfiles for "sysctl
 hw.cpu64bit_capable" and I can't find any examples of portfiles using that
 syntax.

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Ticket URL: <https://trac.macports.org/ticket/28276#comment:13>
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