[MacPorts] #35693: Add "without_apache" variant

[MacPorts]

#35693: Add "without_apache" variant
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 Reporter:  jasper@…              |       Owner:  macports-tickets@…                   
     Type:  enhancement           |      Status:  new                                  
 Priority:  Normal                |   Milestone:                                       
Component:  ports                 |     Version:  2.1.2                                
 Keywords:                        |        Port:  ZendFramework                        
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 It would be nice to have the dependency on "apache2" removed, because
 there are different webservers out there. Maybe add a variant like
 "without_apache"?

 Another solution would be to add variants for those different webservers
 (like "nginx", "lighttpd", etc), but I think just removing the dependency
 on "apache2" is more maintainable.

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Ticket URL: <https://trac.macports.org/ticket/35693>
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