[MacPorts] #34539: ophcrack: add fast and small variants

[MacPorts]

#34539: ophcrack: add fast and small variants
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 Reporter:  ryandesign@…             |       Owner:  cedric.luthi@…        
     Type:  defect                   |      Status:  new                   
 Priority:  Normal                   |   Milestone:                        
Component:  ports                    |     Version:  2.1.1                 
 Keywords:                           |        Port:  ophcrack              
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 ophcrack current decides whether to use fast or small tables based on
 whether the computer building the port has more than 512MB RAM or not.
 This may result in a nonoptimal selection when a port is built on one
 computer and then installed on another. This is very common now that we
 have a buildbot automatically building and distributing ports.

 Instead the port should have "fast" and "small" variants. The port can
 then select one of these variants based on the amount of installed RAM.
 Thus the buildbot will then build one of the variants, and if the user has
 a computer with a different amount of RAM, they'll get the other variant.

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Ticket URL: <https://trac.macports.org/ticket/34539>
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